A figure skater is spinning with her arms held straight out. Which has greater rotational speed, her shoulders or her fingertips? Why?

Answers

Answer 1

The figure skater spinning with her arms held straight out will have greater rotational speed at her fingertips compared to her shoulders.

Rotational speed of a figure skater

When the skater extends her arms straight out, the moment of inertia increases as the mass is distributed farther from the axis of rotation (her body).

According to the conservation of angular momentum, the product of moment of inertia and angular velocity remains constant unless an external torque acts on the system.

Since the moment of inertia increases when her arms are extended, the angular velocity must decrease to maintain the constant angular momentum.

As a result, the rotational speed is higher at her fingertips because they have a larger distance from the axis of rotation compared to her shoulders.

More on rotational speed can be found here: https://brainly.com/question/14391529

#SPJ4


Related Questions

What's an conductor?

A.material that electric current passes easily through
B.material that doesn't conduct electrical current
C.Other:

Answers

Answer:

A. Material that electric current passes easily through.

Explanation:

When an ionic compound dissolves like salt, what breaks apart from each other in the water?

Answers

Answer:

When ionic compounds dissolve in water, they break apart into the ions that make them up through a process called dissociation. When placed in water, the ions are attracted to the water molecules, each of which carries a polar charge. ... The ionic solution turns into an electrolyte, meaning it can conduct electricity.

The bonds that is present between atoms of ionic compounds break apart when it is dissolved in water.

What happen when ionic compound dissolve in water?

When ionic compounds dissolve in water, the ions in the solid separate in the solution because water molecules has polar nature which attracts that ions. The hydrogen of water molecule attracts chlorine of ionic compound whereas hydroxle ion attracts sodium of ionic compound.

So we can conclude that the bonds that is present between atoms of ionic compounds break apart when it is dissolved in water.

Learn more about ionic compound here: https://brainly.com/question/2687188

When forming a ion, oxygen will have what charge?​

Answers

Answer:

it will have a charge of -2

Explanation:

Which statement explains why 49 is a perfect square?

Answers

It’s the product of 7 x 7. The square root of 49 is 7

Answer:

It’s the product of 7 x 7. The square root of 49 is 7

Explanation:

It’s the product of 7 x 7. The square root of 49 is 7

A stalled car is being pushed up a hill at constant velocity by three people. The net force on the car is a. up the hill and equal to the weight of the car.
b. down the hill and equal to the weight of the car. c, Zero up the hill and greater than the weight of the car.
d. down the hill and greater than the weight of the car.

Answers

The net force on the stalled car being pushed up a hill at constant velocity by three people is zero up the hill and equal to the weight of the car.

According to Newton's first law of motion, an object at rest or moving at a constant velocity will continue to do so unless acted upon by an external force. In this scenario, the car is stalled, meaning it is not experiencing any engine-generated force. However, the three people are pushing the car up the hill, applying a force to overcome the force of gravity pulling the car downward.

Since the car is moving at a constant velocity, the net force acting on it must be zero. This is because the applied force by the three people is equal in magnitude and opposite in direction to the force of gravity acting on the car.

Therefore, the net force on the car is zero up the hill and equal to the weight of the car. The force exerted by the three people precisely balances the force of gravity, allowing the car to move at a constant velocity.

When a stalled car is being pushed up a hill at a constant velocity by three people, the net force on the car is zero up the hill and equal to the weight of the car. The applied force by the people counteracts the force of gravity, resulting in a balanced system where the car can maintain a constant velocity.

This scenario demonstrates the principle of equilibrium, where forces are balanced, allowing the car to move without accelerating in either direction.

To know more about velocity ,visit:

https://brainly.com/question/80295

#SPJ11

a light bulb connected across a 6 v battery draws 0.3 a at a particular time. what is the resistance of this bulb at this time (in ohms)?

Answers

At that particular time, the resistance of the light bulb is 20 ohms.

To find the resistance of the light bulb, we can use Ohm's Law, which states that resistance (R) is equal to voltage (V) divided by current (I). In this case, the voltage across the bulb is 6 V, and the current flowing through it is 0.3 A.

Using Ohm's Law: R = V/I

Substituting the given values: R = 6 V / 0.3 A

Calculating the result: R = 20 ohms

It's important to note that the resistance of a light bulb can vary depending on factors such as temperature and the specific characteristics of the bulb.

The given value of 0.3 A represents the current drawn by the bulb at that specific moment, and the resistance calculated assumes a steady-state condition. In practical scenarios, the resistance of a light bulb may change as it heats up or if the voltage or current fluctuates.

Learn more about resistance:

https://brainly.com/question/17563681

#SPJ11

A mixture of three hydrocarbons is at equilibrium at 100°C and 15 atmospheres. The can be assumed to form an ideal mixture in both the liquid and vapor phases. The composition of the mixture and the constants for the vapor pressure functions for each component are given below. The vapor pressure functions are of the form
ln P = A ? D/T
where P is in atmospheres and T is in Kelvins.
Component z A D
C3 0.25 9.816 2260
C4 0.40 9.922 2696
C5 0.35 10.173 3141
a) Determine whether the mixture is a subcooled liquid, a mixture of vapor and liquid, or a superheated vapor.
b) It is desired to bring the mixture to its bubble point (saturated liquid). If temperature is maintained at 100°C, to what total pressure must the mixture be subjected to reach the bubble point?
c) If pressure is maintained at 15 atmospheres, to what temperature must the mixture be adjusted to reach the bubble point? An answer within a few degrees centigrade is acceptable.

Answers

a) The mixture is a superheated vapor pressure.

b) The mixture must be subjected to a total pressure of 14.00 atmospheres to reach the bubble point.

c) The mixture must be adjusted to a temperature within the approximate range of 86-93°C to reach the bubble point while maintaining a pressure of 15 atmospheres.

a) To determine the state of the mixture, we need to compare the actual pressure (15 atmospheres) with the vapor pressures of the components at the given temperature (100°C or 373 K). We calculate the vapor pressure of each component using the given equation and then compare it to the actual pressure.

For C3: ln P = 9.816 - (2260 / 373) ≈ 3.285

For C4: ln P = 9.922 - (2696 / 373) ≈ 3.024

For C5: ln P = 10.173 - (3141 / 373) ≈ 2.246

Since the actual pressure (15 atmospheres) is greater than the vapor pressures of all the components, the mixture is a superheated vapor.

b) To bring the mixture to its bubble point (saturated liquid), we need to determine the total pressure at the bubble point. The total pressure is equal to the sum of the partial pressures of each component. We calculate the partial pressure of each component using the given equation and their respective compositions.

Partial pressure of C3 = 0.25 × 15 atmospheres = 3.75 atmospheres

Partial pressure of C4 = 0.40 × 15 atmospheres = 6.00 atmospheres

Partial pressure of C5 = 0.35 × 15 atmospheres = 5.25 atmospheres

Therefore, to reach the bubble point, the mixture must be subjected to a total pressure of 3.75 + 6.00 + 5.25 = 14.00 atmospheres.

c) To determine the temperature at the bubble point while maintaining a pressure of 15 atmospheres, we need to find the temperature at which the sum of the vapor pressures of the components equals the total pressure.

For C3: ln P = 9.816 - (2260 / T)

For C4: ln P = 9.922 - (2696 / T)

For C5: ln P = 10.173 - (3141 / T)

We substitute P = 15 atmospheres into each equation and solve for T. The resulting temperatures will give us an approximate range within a few degrees centigrade.

For C3: T ≈ 359 K (86°C)

For C4: T ≈ 362 K (89°C)

For C5: T ≈ 366 K (93°C)

Therefore, to reach the bubble point while maintaining a pressure of 15 atmospheres, the mixture must be adjusted to a temperature within the approximate range of 86-93°C.

Learn more about vapor pressure at

https://brainly.com/question/31150220

#SPJ4

If the angle of incidence is 35 degree, what is the angle of reflection?

Answers

The angle of reflection is 35. Because i=r.

Answer:

35

Explanation:

angle of incidence equals angle of reflection

This parallel circuit has two resistors at 15 and 40 ohms. What is the total resistance?
a. 55 ohms
b. 25 ohms
c. 60 ohms
d. 35 ohms

Answers

The total resistance of the circuit, given that parallel circuit has two resistors at 15 and 40 ohms is 11 ohms.

How do i determine the total resistance of circuit?

From the question given, the follow data were obtained:

Resistor 1 (R₁) = 15 ohms Resistor 2 (R₂) = 40 ohmsTotal resistance (R) =?

The total resistance in the circuit can be obtained as follow:

R = (R₁ × R₂) / (R₁ + R₂) => Parallel arrangement

= (15 × 40) / (15 + 40)

= 600 / 55

= 11 ohms

Thus, we can conclude that the total resistance 11 ohms. None of the options are correct.

Learn more about resistance:

https://brainly.com/question/13691672

#SPJ4

Convertir:
A. 3Km a m
B. 250 ma Km
C. 1000Cm a m
D. 10000 mm a Cm

Answers

Answer:

A. 3,000,000 m

B. 0.25 km

C. 10 m

D. 1,000 cm

Explanation:

no hablo español, así que solo ingrese esto en el traductor de G*ogle

A. One kilometer equals 1000 meters, so

3,000*1,000 = 3,000,000 m

B. One meter equals 0.001 kilometer, so

250*0.001 = 0.25 km

C. One centimeter equals 0.01 meter

1,000*0.01 = 10 m

D. One milimeter equals 0.1 centimer, so

10,000*0.1 = 1,000

When two magnets attract, they ___________.

A. Pull together
B. Change color
C. Break
D. Push apart​

Answers

Answer:

A. Pull together

Explanation:

This is because the two magnets are unlike-poles so they attract to eachother

I think A is the right answer

A Quality analyst is checking the process capability associated with the production of struts, specifically the amount of torque used to tighten the fastener. Twenty five samples of size 4 have been taken. These were used to create X bar and R charts. The values for these charts are as follows: The upper and lower control limits for the X-bar chart are 75 Nm and 72.16 Nm respectively. X double bar is 73.58 Nm, R bar is 1.66. The specification limits are 81.5Nm ± 10. Calculate Cp and Cpk. Interpret the values

Answers

A Cp value of 0.168 indicates a low process capability. A Cpk value of 1.26 indicates that the process is slightly off-center.

Calculate the process spread:

Process spread = X double bar ± 3 × R bar

Process spread = 73.58 ± 3 × 1.66

Process spread = 73.58 ± 4.98

Process spread = (68.6, 78.56) Nm

Calculate the process capability indices:

Cp = (Upper Specification Limit - Lower Specification Limit) / (6 × Process spread)

= (81.5 - 71.5) / (6 × Process spread)

= 10 / (6 × Process spread)

Cpk = min((Upper Specification Limit - X double bar) / (3 × R bar),

(X double bar - Lower Specification Limit) / (3 × R bar))

= min((81.5 - 73.58) / (3 × 1.66),

(73.58 - 71.5) / (3 × 1.66))

Calculate Cp and Cpk using the given values:

Cp = 10 / (6 × Process spread)

= 10 / (6 × (78.56 - 68.6))

= 10 / (6 × 9.96)

= 0.168

Cpk = min((81.5 - 73.58) / (3 × 1.66),

(73.58 - 71.5) / (3 × 1.66))

= min(4.81, 1.26)

= 1.26

To learn more about Process Capability Index (Cp), follow the link:

https://brainly.com/question/29317659

#SPJ4

When all else remains the same, what effect would decreasing the focal length have on a convex lens?

Answers

Answer:

It would cause the lens to produce only real images. It would cause the lens to produce only virtual images. It would make the lens stronger. It would make the lens weaker.

Explanation:

quizlet

Answer:

its c

Explanation:

A 12.0-μF capacitor is charged to a potential of 50.0V and then discharged through a 175-Ω resistor How long does it take the capacitor to lose (a) half of its charge and (b) half of its stored energy?

Answers

A 175-Ω resistor is used to discharge a 12.0-F capacitor after it has been charged to a voltage of 50.0V :

(a) It takes approximately 5.12 ms for the capacitor to lose half of its charge.

(b) The capacitor does not lose energy when discharging through a resistor; instead, it loses charge. The time to lose half of the stored energy is infinite.

To solve this problem, we can use the equation for the charge on a capacitor during discharge:

[tex]\begin{equation}Q(t) = Q_0 e^{-t/RC}[/tex]

Where:

Q(t) is the charge at time t,

Q0 is the initial charge on the capacitor,

e is the base of the natural logarithm (approximately 2.71828),

t is the time, and

R and C are the resistance and capacitance, respectively.

(a) Half of the charge:

Since [tex]Q(t) = Q_0 \cdot e^{-\frac{t}{RC}}[/tex], we can set Q(t) equal to half of the initial charge ([tex]\frac{Q_0}{2}[/tex]) and solve for t:

[tex]\frac{Q_0}{2} = Q_0 \cdot e^{-\frac{t}{RC}}[/tex]

Dividing both sides by Q0 and taking the natural logarithm of both sides:

[tex]\frac{1}{2} = e^{-\frac{t}{RC}}[/tex]

Taking the natural logarithm again to isolate t:

[tex]\ln\left(\frac{1}{2}\right) = -\frac{t}{RC}[/tex]

Solving for t:

[tex]t = -\ln\left(\frac{1}{2}\right) \cdot RC[/tex]

Substituting the given values:

R = 175 Ω

C = 12.0 μF = 12.0 * 10⁻⁶ F

[tex]t = -\ln\left(\frac{1}{2}\right) \cdot (175 \Omega) \cdot (12.0 \times 10^{-6} F)[/tex]

Calculating the value, we find:

t ≈ 5.12 ms

Therefore, it takes approximately 5.12 ms for the capacitor to lose half of its charge.

(b) Half of the stored energy:

The energy stored in a capacitor is given by the formula:

[tex]E = \frac{1}{2} Q_0^2 / C[/tex]

To find the time it takes for the capacitor to lose half of its stored energy, we can calculate the energy at time t and set it equal to half of the initial energy:

[tex]\frac{1}{2} Q(t)^2 / C = \frac{1}{2} Q_0^2 / C[/tex]

Simplifying the equation:

Q(t)² = Q0²

Taking the square root of both sides:

Q(t) = Q0

This means that the charge on the capacitor remains the same, and thus the time it takes to lose half of the stored energy is infinite. The capacitor does not lose energy when discharging through a resistor; instead, it loses charge.

To know more about the resistor refer here :

https://brainly.com/question/1322424#

#SPJ11

1. A pump is being used to transport a liquid food product (rho=1000 kg/m3, μ=1.5 cP) from a holding tank to a filling machine at a mass flow rate of 2 kg/s. The liquid level in the holding tank is 10 m above the pump, and the filling machine is 5 m above the pump. There is 100 m of 2-in nominal diameter sanitary pipeline between the holding tank and the filling machine, with one open globe valve and four regular 90 C flanged elbows in the system. The product is being pumped through a heat exchanger with 100 kPa of pressure drop due to friction before filling. Determine the theoretical power requirement for the pump.

Answers

The theoretical power requirement for the pump is 97.39 W.

Given Information: Density of the liquid, ρ = 1000 kg/m³, Viscosity of the liquid, μ = 1.5 cP, The mass flow rate of the liquid, m = 2 kg/s, The height difference between the holding tank and the filling machine, H = 10 - 5 = 5 m, Length of the pipeline, L = 100 m, Diameter of the pipeline, d = 2 inches = 0.05 m, Pressure drop due to friction, ∆P = 100 kPa, Number of globe valves, n₁ = 1, Number of regular flanged elbows, n₂ = 4.

We need to determine the theoretical power requirement for the pump.

Theoretical power requirement is given by;

P = mgh + [(ΔP/ρ) × Q] + [(K₁ + K₂) × ρ × g × Q²/2]

Where, P = Power (W), ρ = Density of the liquid (kg/m³), m = Mass flow rate of the liquid (kg/s), g = Acceleration due to gravity (m/s²), h = Height difference between the two points (m), ΔP = Pressure drop due to friction (Pa), L = Length of the pipeline (m), d = Diameter of the pipeline (m), Q = Volumetric flow rate (m³/s), K₁, K₂ = Loss coefficients of the globe valve and regular flanged elbow respectively.

The formula for the volumetric flow rate is given by;

Q = (π/4) × d² × v

Where, v = Velocity of the fluid.

The formula for velocity is given by

v = (4 × m)/(ρ × π × d²)

Now, putting the given values in the above formulas

P = (2 × 9.81 × 5) + [(100000/1000) × (2/0.05²) ] + [(0.45 + 4 × 0.35) × 1000 × 9.81 × (2/(π × 0.05²) )²/2]P = 97.39 W.

To know more about volumetric flow visit:

https://brainly.com/question/32612941

#SPJ11

If 2 people are on a bed and they are the same weight, and 1 of them gets off and the bed breaks who is responsible? Is it the person still on the bed or the person who got off?

Answers

Answer:

I would say the one who got up bc if he or she wouldn't have gotten up the bed wouldn't have broke

the terminals of a 0.70 v watch battery are connected by a 80.0-m-long gold wire with a diameter of 0.100 mm .

Answers

A gold wire with a length of 80.0 meters and a diameter of 0.100 millimeters connects the terminals of a 0.70 V watch battery. Therefore, 0.28 Amperes of current are flowing via the gold wire.

To determine the current in the wire, we need to use Ohm's Law, which states that the current (I) flowing through a conductor is equal to the voltage (V) across the conductor divided by its resistance (R):

[tex]\begin{equation}I = \frac{V}{R}[/tex]

First, let's calculate the resistance of the gold wire. The resistance (R) can be determined using the formula:

[tex]\begin{equation}R = \frac{\rho L}{A}[/tex]

where ρ is the resistivity of gold, L is the length of the wire, and A is the cross-sectional area of the wire.

The resistivity of gold (ρ) is approximately 2.44 x 10⁻⁸ Ω·m.

The length of the wire (L) is given as 80.0 m.

To find the cross-sectional area (A) of the wire, we need to convert the diameter (0.100 mm) to meters:

Diameter = 0.100 mm = 0.100 x 10⁻³ m

The cross-sectional area (A) can be calculated using the formula:

[tex]\begin{equation}A = \pi \left(\frac{d}{2}\right)^2[/tex]

[tex]\begin{equation}A = \pi \left(\frac{0.100 \times 10^{-3} \text{m}}{2}\right)^2[/tex]

A = 7.854 x 10⁻¹⁰ m²

Next, we can calculate the resistance (R) using the formula:

[tex]R = \frac{\rho L}{A}[/tex]

where ρ is the resistivity of gold, given as 2.44 x 10⁻⁸ Ω·m, and L is the length of the wire, given as 80.0 m.

[tex]R = \frac{2.44 \times 10^{-8} \Omega \cdot m \times 80.0 m}{7.854 \times 10^{-10} m^2}[/tex]

R = 2.50 Ω

Finally, we can determine the current (I) using Ohm's Law:

[tex]I = \frac{V}{R}[/tex]

Given that the voltage (V) across the wire is 0.70 V, we can substitute the values:

[tex]I = \frac{0.70\,V}{2.50\,\Omega}[/tex]

I = 0.28 A

Therefore, the current flowing through the gold wire is 0.28 Amperes.

To know more about the gold wire refer here :

https://brainly.com/question/17031833#

#SPJ11

Complete question :

The terminals of a 0.70 V watch battery are connected by a 80.0-m-long gold wire with a diameter of 0.100 mm . What is the current in the wire?

Mass of trolley (m):
(1)
0,9
kg
Mass
m xa
Acceleration
(a)
(mos)
Applied
Force (N)
0
4,04
O112
Tabulate your measurements in the table below.
At from A to B (s)
Average
Kg
At (s)
1
2
3
Hanger only
4,07 4,00
HOS
Hanger +
1 mass piece
10
3,09
3,04 3,10
3,14
Hanger +
2 mass pieces
ao
2,00
Hanger +
3 mass pieces 30
1196
1,91
Hanger +
4 mass pieces
168 1,69 1,TO 1,69
(5)
0,21
2,1 x 103 0, 098
O #4
8,8X10
2,22 2,14
0, 196
01 SS
0102
o zau
0103
01392
0/ 70
(5)
(5)
QUESTIONS AND ANALYSIS
1.
In this experiment identify the...
1.1
independent variable
(1)
1.2 dependent variable
3 E
1.3
controlled variable
Ар со
2.
3
Describe how the effect of friction was minimised in the experiment.
(1)
Use the recorded data to plot a graph that will show the relationship
between the acceleration and the applied force on the trolley. Use a (8)
graph paper.
Ilse the cranh to determine the mass of the trolley.
(4)​

Answers

Answer:

ij

Explanation:

Planetesimals beyond the orbit of _______ failed to accumulate into a protoplanet because the gravitational field of _______ continuously disturbed their motion.
Select one:
a. Neptune, Uranus
b. Jupiter, Mars
c. Mars, Jupiter
d. Earth, Saturn

Answers

Planetesimals beyond the orbit of Neptune failed to accumulate into a protoplanet because the gravitational field of Uranus continuously disturbed their motion.

The formation of protoplanets involves the gradual accumulation of planetesimals, which are small celestial bodies in the early stages of planetary formation. In the case of planetesimals beyond the orbit of Neptune, their inability to accumulate into a protoplanet can be attributed to the gravitational influence of Uranus. Uranus, being a massive planet located closer to the Sun than Neptune, exerts a significant gravitational field. This gravitational field continuously disturbs the motion of planetesimals in that region, preventing them from coming together and forming a larger body. As a result, the planetesimals remain scattered and do not have the opportunity to undergo further gravitational accretion and grow into a protoplanet.

Learn more about protoplanets here:

https://brainly.com/question/32256852

#SPJ11

q7: where was the noon altitude of the sun highest and lowest on the equinoxes? your answer should be either a latitude or a name for a specific latitude.

Answers

These latitudes mark the northernmost and southernmost points where the Sun can appear directly overhead during the respective equinoxes.

On the equinoxes, the noon altitude of the Sun is highest at the latitude known as the Tropic of Cancer, which is approximately 23.5 degrees north of the equator. This occurs during the March equinox (around March 20-21) when the Sun is directly overhead at the Tropic of Cancer.

Conversely, the noon altitude of the Sun is lowest at the latitude known as the Tropic of Capricorn, which is approximately 23.5 degrees south of the equator. This occurs during the September equinox (around September 22-23) when the Sun is directly overhead at the Tropic of Capricorn.

These latitudes mark the northernmost and southernmost points where the Sun can appear directly overhead during the respective equinoxes.

To learn more about latitudes click here

https://brainly.com/question/14833692

#SPJ11

if r1 < r2 < r3, and if these resistors are connected in series in a circuit, which one dissipates the greatest power?

Answers

In a series circuit with resistors where r₁ < r₂ < r₃, the resistor r₃ dissipates the greatest power since power is directly proportional to resistance, and r₃ has the highest resistance.

Determine find the one which dissipates the greatest power?

The power dissipated in a resistor can be calculated using the formula P = I²R, where P is the power, I is the current passing through the resistor, and R is the resistance. In a series circuit, the current passing through each resistor is the same.

Since the resistors are connected in series, the total resistance of the circuit is given by R_total = r₁ + r₂ + r₃. The power dissipated by each resistor can be determined by substituting the respective resistance values into the power formula.

When we compare the power dissipated by each resistor, we find that the power is directly proportional to the resistance. Therefore, the resistor with the highest resistance, r₃, dissipates the greatest power.

This is because a higher resistance causes more energy to be converted into heat as current passes through the resistor, resulting in greater power dissipation.

To know more about resistance, refer here:

https://brainly.com/question/14547003#

#SPJ4

Which element does NOT have similar chemical properties to neon (Ne)?

A. F
B. Ar
C. Xe
D. He

Answers

The element (A) F (fluorine) doesn't have similar chemical properties to neon (Ne).

The noble gases comprise a group of the periodic table, consisting of six chemical elements: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The noble gases are the chemical elements that are the least reactive.

They are the lightest and have the smallest atomic radii of any element in their respective periods. Their non-reactivity makes them very useful in a wide range of applications. They are used in lighting, cryogenics, as pressurized gases for spacecraft propulsion, and in the semiconductor industry. The noble gases are located in the last column of the periodic table. The number of electrons in their outermost shell (the valence shell) is the same as the group number.

For example, helium and neon have two valence electrons, and argon has eight. Fluorine, represented by F on the periodic table, is a chemical element with the atomic number 9. It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. As a member of the halogen group, it is a highly reactive element. Therefore, the option (A) F (fluorine) is not a noble gas and doesn't have similar chemical properties to neon (Ne).

Learn more about noble gases here: https://brainly.com/question/13715159

#SPJ11

TRUE/FALSE A high voltage combined with a low current will deliver less power than a moderate voltage combined with a moderate current.
True or False?

Answers

The statement "A high voltage combined with a low current will deliver less power than a moderate voltage combined with a moderate current "is false a high voltage combined with a low current can deliver more power.

The power (P) in an electrical circuit can be calculated using the formula P = V * I, where V is the voltage and I is the current. Power represents the rate at which energy is transferred or transformed.

When considering power, it's important to understand that power is not solely determined by voltage or current alone. It depends on their combination.

If we have a high voltage (V) and a low current (I), the product V * I can still result in a significant power output. While the current may be low, the high voltage compensates for it, leading to a substantial power delivery.

Conversely, a moderate voltage with a moderate current may result in a lower power output compared to a high voltage with a low current.

Therefore, a high voltage combined with a low current can deliver more power than a moderate voltage combined with a moderate current.

To know more about voltage, refer here:

https://brainly.com/question/32002804#

#SPJ11

PLEASE HELP MEEEE
The bending of waves due to a change in speed is called
a.
reflection.
b.
refraction.
c.
diffraction.
d.
interference.

Answers

Answer:

D

Explanation:

Interference is the interaction between waves that meet.

A toroidal solenoid (see the figure ) has inner radius 14.1cm and outer radius 18.6 cm . The solenoid has 270 turns and carries a current of 7.30 A. Part A What is the magnitude of the magnetic field at 11.8 cm from the center of the torus? Part B What is the magnitude of the magnetic field at 16.3 cm from the center of the torus? Part C What is the magnitude of the magnetic field at 20.4 cm from the center of the torus?

Answers

The magnetic field at 11.8 cm from the center is 4.65 × 10^−5 T. In Part B, the magnetic field at 16.3 cm from the center is 1.05 × 10^−5 T. In Part C, the magnetic field at 20.4 cm from the center is 3.92 × 10^−6 T.

To calculate the magnitude of the magnetic field at different distances from the center of the toroidal solenoid, we can use Ampere's law, which states that the magnetic field inside a solenoid is directly proportional to the product of the current and the number of turns per unit length.

The formula to calculate the magnetic field inside a toroidal solenoid is:

B = (μ₀ * n * I) / (2π * r)

Where:

B is the magnetic field,

μ₀ is the permeability of free space (4π × 10^−7 T·m/A),

n is the number of turns per unit length (turns/m),

I is the current (A), and

r is the distance from the center of the torus (m).

Inner radius (r1) = 14.1 cm = 0.141 m

Outer radius (r2) = 18.6 cm = 0.186 m

Number of turns (n) = 270

Current (I) = 7.30 A

Part A: Distance from the center (r1) = 11.8 cm = 0.118 m

To find the number of turns per unit length, we can calculate the average radius of the torus:

Average radius (R) = (r1 + r2) / 2

R = (0.141 m + 0.186 m) / 2

R = 0.1635 m

Number of turns per unit length (n) = Number of turns (270) / Circumference of the torus (2πR)

n = 270 / (2π * 0.1635 m)

Now we can calculate the magnetic field at a distance of 0.118 m:

B = (μ₀ * n * I) / (2π * r)

B = (4π × 10^−7 T·m/A) * (n / (2π * 0.1635 m)) * (7.30 A) / (2π * 0.118 m)

Perform the calculations to find the magnitude of the magnetic field.

Part B: Distance from the center (r2) = 16.3 cm = 0.163 m

Repeat the calculations using the distance of 0.163 m to find the magnitude of the magnetic field.

Part C: Distance from the center (r3) = 20.4 cm = 0.204 m

Repeat the calculations using the distance of 0.204 m to find the magnitude of the magnetic field.

The magnitude of the magnetic field at different distances from the center of the toroidal solenoid can be calculated using Ampere's law. By substituting the given values into the formula, we find the magnetic field at each distance. In Part A, the magnetic field at 11.8 cm from the center is 4.65 × 10^−5 T. In Part B, the magnetic field at 16.3 cm from the center is 1.05 × 10^−5 T. In Part C, the magnetic field at 20.4 cm from the center is 3.92 × 10^−6 T.

To know more about, visit:

https://brainly.com/question/14411049

#SPJ11

0.18 kg of helium is constrained within one portion of an insulated container,such that it fills a volume of only 2.1 . a barrier divides the helium from the rest of the container, which is completely evacuated. for some unknown reason, the barrier ruptures. as a result, the helium expands to fill the entire container. the temperature of the helium remains a constant 340 k before, during, and after the expansion. if the specific volume of the helium increases by a factor of 3.5 during the expansion, what is the final pressure of the helium in kpa?

Answers

The final pressure of the helium in kPa would be 28.986 P1 kPa.

Ideal gas problem

To solve this problem, we can use the ideal gas law, which states that:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Given:

Initial volume of helium (V1) = 2.1 L

Final volume of helium (V2) = 2.1 L * 3.5 = 7.35 L

Amount of helium (n) = mass / molar mass = 0.18 kg / 4 g/mol = 0.045 mol

Temperature (T) = 340 K

Gas constant (R) = 8.314 J/(mol·K)

Using the ideal gas law, we can write the equation as:

P1 * V1 = n * R * T

P2 * V2 = n * R * T

Since the temperature remains constant, we can simplify the equation as:

P1 * V1 = P2 * V2

Substituting:

P1 * 2.1 L = P2 * 7.35 L

P2 = (P1 * 2.1 L) / 7.35 L

P2 = P1 * 0.286

Now, we need to convert the pressure from atm to kPa:

1 atm = 101.325 kPa

P2 (kPa) = P2 (atm) * 101.325 kPa

P2 (kPa) = P1 * 0.286 * 101.325 kPa

              = 28.986 P1 kPa.

Therefore, the final pressure of the helium in kPa is approximately 28.986 P1 kPa.

More on ideal gas law can be found here: https://brainly.com/question/12624936

#SPJ1

A two-dimensional vector makes an angle of θ=41.4∘ and has an x-component of 21.5meters. Calculate the magnitude of this twodimensional vector. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientifio notation e9.0.23,−2,1 e.6, 5.23 e-8 Enier answet here 46,65 meters

Answers

The magnitude of the two-dimensional vector, with an x-component of 21.5 meters and an angle of θ=41.4°, is approximately 46.65 meters. This is calculated using trigonometry and the Pythagorean theorem.

Determine how to find the magnitude of the vector?

To calculate the magnitude of the vector, we can use the trigonometric relationship between the angle θ and the vector components. The x-component of the vector is given as 21.5 meters.

Using trigonometry, we can find the y-component of the vector:

sin(θ) = y-component / magnitude

Rearranging the equation, we have:

y-component = magnitude * sin(θ)

Given θ = 41.4° and the x-component as 21.5 meters, we can substitute these values into the equation and solve for the magnitude:

y-component = magnitude * sin(41.4°)

y-component = magnitude * 0.65605902899

Since the vector lies in the xy-plane, the magnitude can be found using the Pythagorean theorem:

magnitude = sqrt(x-component² + y-component²)

magnitude = sqrt(21.5² + y-component²)

Substituting the value of y-component, we have:

magnitude = sqrt(21.5² + (magnitude * 0.65605902899)²)

Simplifying the equation and solving for the magnitude, we find that the magnitude is approximately 46.65 meters.

To know more about trigonometric, refer here:

https://brainly.com/question/29156330#

#SPJ4

A 60-Hz 220-V-rms source supplies power to a load consisting of a resistance in series with an inductance. The real power is 1500 W, and the apparent power is 3400 VA. Part A Determine the value of the resistance. Express your answer to three significant figures and include the appropriate units. НА ? R= Value Omega Submit Request Answer Part B Determine the value of the inductance. Express your answer to three significant figures and include the appropriate units. ЦА ?

Answers

Part A: The value of the resistance is approximately 43.9 Ω.

Part B: The value of the inductance is approximately 0.82 H.

Find the value of resistance and inductance?

To determine the resistance and inductance, we'll use the formulas for real power (P), apparent power (S), and power factor (PF).

Given that the real power is 1500 W and the apparent power is 3400 VA, we can write:

P = 1500 W

S = 3400 VA

The power factor (PF) is the ratio of real power to apparent power:

PF = P / S

We know that the power factor is equal to the cosine of the angle between the voltage and current phasors. Since the load is purely resistive and inductive, the power factor can be expressed as:

PF = cos(θ) = R / Z

where R is the resistance and Z is the impedance.

The impedance (Z) can be calculated using the formula:

Z = S / (2πf)

where f is the frequency of the source.

Given that the frequency is 60 Hz, we can substitute the values:

Z = 3400 VA / (2π × 60 Hz)

Now, we can substitute the power factor equation into the impedance equation:

R / Z = PF

R = Z × PF

Substituting the values of Z and PF, we get:

R = (3400 VA / (2π × 60 Hz)) × (1500 W / 3400 VA)

Simplifying the expression:

R ≈ 43.9 Ω

For Part B, we need to find the inductance (L). The impedance can be expressed as:

Z = √(R² + Xₗ²)

where Xₗ is the reactance due to inductance.

Since the load is inductive, we can write the reactance as:

Xₗ = Z × sin(θ)

Substituting the values of Z and PF:

Xₗ = Z × √(1 - PF²)

Using the given values, we can calculate Xₗ:

Xₗ = (3400 VA / (2π × 60 Hz)) × √(1 - (1500 W / 3400 VA)²)

Simplifying the expression:

Xₗ ≈ 30.4 Ω

The reactance due to inductance can be written as:

Xₗ = 2πfL

Solving for L:

L = Xₗ / (2πf)

Substituting the values:

L = 30.4 Ω / (2π × 60 Hz)

Calculating the value:

L ≈ 0.82 H

Therefore, Part A: The resistance in the load is approximately 43.9 Ω.

Part B: The inductance in the load is approximately 0.82 H.

To know more about resistance, refer here:

https://brainly.com/question/14547003#

#SPJ4

a) find the position vector of a particle that has the given acceleration and the specified initial velocity and position. a(t) = 10t i sin(t) j cos(2t) k, v(0) = i, r(0) = j

Answers

The position vector of the particle is given by:

r_(t) = ((5/3)t³× (1 - cos(t)) + t)× i + ((5/6)t³× (1 - sin(2t)) + 1)× j

To find the position vector of a particle given its acceleration, initial velocity, and initial position, we can integrate the acceleration function twice with respect to time.

Given:

Acceleration: a(t) = 10t×i×sin×(t)× j× cos×(2t)× k

Initial velocity: v(0) = i

Initial position: r(0) = j

We start by integrating the acceleration function to find the velocity function v(t):

v(t) = integration of [0 to t]× a_(t)× dt

Integrating each component of the acceleration function separately, we have:

v_(t) = integration of [0 to t]× (10t× i sin(t)× j cos(2t) ×k) dt

= integration of [0 to t]× (10t× i× sin(t)) dt + integration of [0 to t]× (10t j cos(2t)) dt

Integrating each term, we get:

v_(t) = [5t²× i ×(1 - cos(t))] + [5t²× j× (1 - sin(2t))] + C_(1)

Applying the initial condition v_(0) = i, we can find the constant C_(1):

v_(0) = [5(0)² ×i× (1 - cos(0))] + [5(0)² ×j ×(1 - sin(2(0)))] + C_(1)

i = C_(1)

Therefore, the velocity function becomes:

v_(t) = 5t²× i ×(1 - cos(t)) + 5t²× j (1 - sin(2t)) + i

Next, we integrate the velocity function to find the position function r(t):

r_(t) = integration of [0 to t] ×v_(t) ×dt

Integrating each component of the velocity function separately, we have:

r_(t) = integration of [0 to t]× (5t²× i ×(1 - cos(t)) + 5t² ×j (1 - sin(2×t)) + i)× dt

Integrating each term, we get:

r_(t) = [(5/3)t³× i× (1 - cos(t))] + [(5/6)t³× j ×(1 - sin(2t))] + (t× i) + C_(2)

Applying the initial condition r_(0) = j, we can find the constant C_(2):

r_(0) = [(5/3)(0)³× i× (1 - cos(0))] + [(5/6)(0)³× j× (1 - sin(2(0)))] + (0× i) + C_(2)

j = (0× i) + C(2)

j = C(2)

Therefore, the position function becomes:

r_(t) = (5/3)t³× i× (1 - cos(t)) + (5/6)t³× j× (1 - sin(2t)) + t× i + j

So, the position vector of the particle is given by:

r(t) = ((5/3)t³× (1 - cos(t)) + t)× i + ((5/6)t³× (1 - sin(2t)) + 1)× j

To know more about vector:

https://brainly.com/question/12986077

#SPJ4

Charge is given in microcoulombs. What must you multiply the charge by to use Coulomb's
law to calculate the electric force?
O
A. 10-6
O
B. 10-3
C. 106
D. 103

NEED ANSWER NOW
NO LINK

Answers

Answer:

Option A. 10¯⁶

Explanation:

To know which option is correct, we must bear in mind, the relationship between micro coulomb (μC) and coulomb (C). This is given below:

Recall:

1 μC = 10¯⁶ C

Therefore, to convert micro coulomb (μC) to coulomb (C), multiply the value given in micro coulomb (μC) by 10¯⁶.

Thus, option A gives the correct answer to the question.

Other Questions
Sammie is using radiocarbon dating to determine the age of a sample of objects. Which best explains why radiocarbon dating can be used to determine the accurate age of these items? A. They contain radioactive isotopes that decay at a constant rate. B. They are made primarily of radioactive carbon that is easy to detect. C. They give off radioactive isotopes when an electrical charge is applied. D. They have been exposed to large amounts of radioactivity in the atmosphere. Describe Why are trochophores of interest to biologists? 10. Use the two given poInts and calculate the slope.(7,2), (6,1) Lacey opened a savings account and deposited $100.00. Theaccount earns 6% interest, compounded monthly. If she wantsto use the money to buy a new bicycle in 2 years, how muchwill she be able to spend on the bike?Round your answer to the nearest cent. During its current quarter, Karbon Ltd purchased an office building for a total of $1060110 before applicable sales tax. The company spends an additional $125345, which includes sales tax, on office equipment. The building will be used 47% for fully taxable supplies and 21 for zero-rated supplies. The office equipment will be used 47% for fully taxable supplies and 21% for zero-rated supplies, as well. Karbon Ltd. Is located in Alberta. All of its operations in that province. Determine the input tax that karbon Ltd can claim for these capital expenditure? Atoms of which two elements have a combined total of 23 protons?Boron, B, and carbon, CSodium, Na, and magnesium, MgCopper, Cu, and zinc, ZnNone of these The majority of New Zealanders live in rural areas.Please select the best answer from the choices providedTF The Continental Congress issued this commission to Benedict ArnoldAlexander HamiltonJohn HancockGeorge Washington Into what kingdom would each of the following be classified: Unicellular prokaryotes that live in dust. ______________________ Unicellular eukaryotes that line in pond water. _____________________ Multicellular eukaryotes that live all over the planet and consume food. ______________________ Unicellular prokaryotes that live in volcanic ash. _________________________ Multicellular eukaryotes that have cell walls and are heterotrophic. _______________________ Multicellular eukaryotes that have cell walls and are autotrophic. ________________________ The Mir Space Station:a) is still used by Russian cosmonautsb) was in orbit around the earth for 15 yearsc) was sent into orbit by the United Statesd) all of the above WILL GIVE BRAINLIESTGive several reasons why Python is such a great programming language. Explain how Python is related to flowcharts.Consider this program:Cost1 = input("Please enter the first expense: ")Cost2 = input("Please enter the second expense: ")print("Your total for both expenses was", Cost1 + Cost2)If the user inputs 10 for the first expense and 20 for the second expense, what will the interpreter show in the final line when this program is run? If this result in not what the programmer intended, how would you explain what went wrong?You are writing a line of code that should ask the user to input the balance of their bank account in dollars and cents. The program will then perform a multiplication problem to tell the user how much interest they can earn. Identify three errors in your line of input code and explain why they are incorrect. Include the corrected line of code in your answer. Here is the code:1num = input(What is your balance?)What are some kinds of comments that might be useful for a programmer to include in a program?If you were planning how to write a program, at what point would a flowchart be helpful? At what point would pseudocode be helpful? Explain your reasoning. please tell me where to plot the points and what the solution will be. How is republicanism reflected in the provisions of both the U.S. and theTexas Constitutions?Select one:Both provide a framework of how representatives are elected to thelegislature.Both outline how powers are separated between the branches of government.Both detail how power is shared between lower and higher levels ofgovernment.Both include a Bill of Rights to specify the rights citizens are guaranteed. On June 30, 2021, Prego Equipment purchased a precision laser-guided steel punch that has an expected capacity of 301,000 units and no residual value. The cost of the machine was $481,600 and is to be depreciated using the units-of-production method. During the six months of 2021, 25,000 units of product were produced. At the beginning of 2022, engineers estimated that the machine can realistically be used to produce only another 220,800 units. During 2022, 71,000 units were produced.Prego would report depreciation in 2022 of: Write a linear function f with given values. F(3)=-4, f(5)= -4 I need help again haha On a dairy farm, 6.03 square meters is required for every cow. If a farmer wishes to havr 1200 cows on her farm, how many acres must her farm be? (1 square miles is exactly 640 acres). (Using conversion factors) Question 11 (1 point)(04.01 LC)Read and choose the correct option.Paulina tiene 25 aos. Cuando era pequea, Paulina no era callada, jugaba con nuevos amigos cada da afuera y no miraba los dibujosanimados.Based on the text, what type of personality did Paulina have? (1 point)ActiveObCuriousShyOdWorried Solve the equation.[tex] {3}^{4(m + 1)} + {3}^{4m} - 246 = 0 \\ [/tex] What is the midpoint of line segment QU given Q(6, 3) and P(-6, -1).