A student conducts three experiments to determine how certain quantities influence the centripetal force responsible for an object to spin in a horizontal circle. The student uses one end of a string to attach the object while the other end is connected to a force sensor that allows the student to change the tension on the string, as shown in the figure. The student records data from the three experiments in the table above. Which of the following experiments, if any, collected data that do not agree with the expression for the net centripetal force on the object?

A)The experiment in which mass was changed
B)The experiment in which the radius of the circular path was changed
C)The experiment in which the speed of the object was changed
D)All the data are expected.

Answers

Answer 1

Option C) The experiment in which the speed of the object was changed

is only statement that doesn't satisfy the given data as shown below:

The above statement can be verified using the calculation:

Formula for centripetal force(F) = [tex]\frac{mv^2}{r}[/tex]

where m is mass of object , v is speed of object and r is radius of the circular motion.

For option A) when only mass of object is changed and rest all are same.

so F = k*m where k = [tex]\frac{v^2}{r}[/tex] as both are constant

=> [tex]\frac{F_1}{F_2}[/tex] = 4.04/8.08 = 0.5

and [tex]\frac{m_1}{m_2}[/tex] = 0.1/0.2 =0.5

so [tex]\frac{F_1}{F_2} = \frac{m_1}{m_2}[/tex]

similary [tex]\frac{F_2}{F_3} = \frac{m_2}{m_3}[/tex] and hence data is correct for option A)

For option B) when only radius of object is changed and rest all are

same.

so F = k/r where k = [tex]m*v^2[/tex] as both are constant

=> [tex]\frac{F_1}{F_2}[/tex] = 4.04/8.08 = 0.5

and [tex]\frac{r_2}{r_1}[/tex] = 0.3/0.6 =0.5

so [tex]\frac{F_1}{F_2} = \frac{r_2}{r_1}[/tex]

so both are same , similary [tex]\frac{F_2}{F_3} = \frac{r_3}{r_2}[/tex] and hence data is correct for option B

For option C) when only speed of object is changed and rest all are

same.

so F = k*[tex]v^2[/tex] where k = [tex]\frac{m}{r}[/tex] as both are constant

=> [tex]\frac{F_1}{F_2}[/tex] = 4.04/9.09 = 0.44444

and [tex]\frac{v_1^2}{v_2^2}[/tex] = 4.08/9.181 =0.44439

so ,[tex]\frac{F_1}{F_2}[/tex] ≠ [tex]\frac{v_1^2}{v_2^2}[/tex]

and hence data is not correct for option C

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Complete question:

A student conducts three experiments to determine how certain quantities influence the centripetal force responsible for an object to spin in a horizontal circle. The student uses one end of a string to attach the object while the other end is connected to a force sensor that allows the student to change the tension on the string, as shown in the figure. The student records data from the three experiments in the table above. Which of the following experiments, if any, collected data that do not agree with the expression for the net centripetal force on the object?

A)The experiment in which mass was changed

B)The experiment in which the radius of the circular path was changed

C)The experiment in which the speed of the object was changed

D)All the data are expected.

A Student Conducts Three Experiments To Determine How Certain Quantities Influence The Centripetal Force

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How is cutoff value calculated?

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The term "cutoff" in theoretical physics refers to an artificial maximum or minimum value of energy, momentum, or length that is used to exclude objects having values that are more or smaller than these physical quantities from calculations.

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How is the rule for the interaction between magnetic poles similar to the rule for the interaction between electrically charged particles?

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In that, it states that similar poles repel, unlike poles attract and that the force is proportional to the inverse square of the distance between two poles.

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You should emphasize this as the main point of your education at this level because a push or a pull is referred to as a force. In our daily lives, forces appear in many different ways.

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1.24 × 107 kilograms. Write the mass in standard notation.

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The product of 1.24 and 107 kilograms expressed in standard form is 1.3268 x 10² kg.

What is standard form?

A standard form is a form of writing equations, numbers, or expressions using a certain set of rules.

Standard form is a method often used by scientists to express large number into a more condensed form, usually in power of ten.

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Thus, numbers expressed in standard forms makes it very easy to represent and recall the number.

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If you catch the ruler 8.3 cm from the lower end, what is your reaction time? Express your answer using two significant figures.

Answers

Answer:

Below

Explanation:

The time it take the ruler to fall .083 m is given by

  d = 1/2 a t^2       d = .083 m   a = 9.81 m/s^2

       t = .13 s

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If  the point on the arm hanging the bob and the pointer are not on the same vertical line then the torque applied by the bob will not be zero.

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(Complete question) is:

If a metal bob is rotated in a uniform circular motion in this experiement, what would be the effect if the point on the arm hanging the bob and the pointer are not on the same vertical line?

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Covalent solids exhibit low melting points and boiling points. Therefore, option B is correct.

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Answer:

Radon and helium both of which form during the decay of heavier elements in bedrock.

Can somebody answer this

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Answer:

answer is c

Explanation:

....................

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Natural rubidium has the average mass 85. 4678 amu and is composed of isotopes rb-85 (mass = 84. 9117 amu) and rb-87. The ratio of atoms rb-85/rb-87 in natural rubidium is 2. 591. Calculate the mass of rb-87.

Answers

The correct response is 86.913 amu for Rb-87's mass.

Two isotopes of the rubidium (Rb) element exist: Rb-85, which has an atomic mass of 84.9117 amu, and Rb-87, which has an atomic mass of 86.9092 amu. Rubidium has an average atomic weight of 85.4678.

Both isotopes have a ratio of 2.591 to 1. Consequently, there is one Rb-87 atom for every 2.591 Rb-85 atoms.

Rb-85 abundance is 2.591/3.591 = 0.722% for 100% naturally occurring Rb, while Rb-87 abundance is 1 - 0.722 = 0.278.

84.9117 × 0.722 + X × 0.278 = 85.4678

X = 24.1618 / 0.278 X = 86.913 amu 61.306 + X 0.278 = 85.4678 X 0.278 = 85.4678 - 61.306 X 0.278 =86.913

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A car is traveling on michigan street towards ward street. The car plans to turn right onto ward street. What is the angle measure of the turn?.

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The angle measure of the turn is 105 degrees.

Acute Angle: An acute angle is one that is less than 90 degrees. Right Angle: A right angle is one that is exactly 90 degrees. Obtuse Angle An angle larger than 90 degrees is referred to as an obtuse angle.

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Since 75+x = 180 (a straight line)

Then x = 180-75=105

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The model will be just like the real solar system when it shows the moon and other satellites revolve around the earth.

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What is the ionic compound for MgBr2?

Answers

The ionic compound for [tex]MgBr_2[/tex] magnesium.

Magnesium bromide is the chemical compound known as [tex]MgBr_2[/tex].

We are aware that ionic compounds are made up of two ions, one of which is a positive-charged cation and the other a negative-charged anion. For instance, when we separate ionic compounds into their constituent ions, we obtain cations and anion.

(a), Breaking of [tex]$\mathrm{MgBr}_2$[/tex] into ions '

[tex]\left.\mathrm{MgBr}_2_(aq) \longrightarrow \mathrm{Mg}_{(\mathrm{aq})}^{2+}+2 \mathrm{Br}_{\left(a q_1\right)}{ }^2\right[/tex]

Cation formula [tex]$=Mg^{2+} (a q)$[/tex]

Anion Formula [tex]$=\mathrm{Br}^{\ominus}(a q)$[/tex]

(b) Breaking of [tex]$\mathrm{FeCl}_3$[/tex] into ions [tex]$\mathrm{L}$[/tex]

[tex]Fecl_{3(aq)}\rightarrow Fe^{3+}(aq)+3cl^-(aq)[/tex]

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Anion formula [tex]$=cl^{\theta}(a q)$[/tex]

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should the speed of the goose be increased or decreased to make the total momentum of the three birds add up to zero? verify your answer by calculating the required speed

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The birds' collective momentum is in the same direction as a goose's, i.e., the right way, but the goose's momentum is more than that of two ducks.

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       0=-2md vd + mg vg

       2md vd/ mg = v g =2 (40) (1.1) /7.6kg

       vg =1.2m/s

       when total momentum is set to zero.

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A mass spectrometer has a magnetic field of 5.00 mT. It is used to test an unknown particle which has a charge of 2e and is travelling at 100 m/s. If the resulting radius of curvature for the ion is measured to be 1.67 mm:

A. What is the particle's mass?
B. Which element is it? (You may require a periodic table.)

Answers

Answer:

A mass spectrometer uses a magnetic field to separate ions based on their mass-to-charge ratio. The mass of an ion can be calculated from its charge, velocity, and the radius of curvature of its path in the magnetic field, using the formula m = (qBv)/(2πr), where m is the mass, q is the charge, B is the magnetic field, v is the velocity, and r is the radius of curvature.

In this case, the magnetic field is 5.00 mT, the charge of the unknown particle is 2e, and its velocity is 100 m/s. The radius of curvature of the ion's path is measured to be 1.67 mm. Plugging these values into the formula above, we get:

m = (2e * 5.00 mT * 100 m/s) / (2π * 1.67 mm) = 0.24 g/mol

Therefore, the mass of the unknown particle is 0.24 g/mol.

To determine which element the particle is, we can use the periodic table to find an element with a mass-to-charge ratio of 0.24 g/mol. The element with the closest match is magnesium (Mg), which has a mass-to-charge ratio of 24.31 g/mol. Therefore, the unknown particle is likely to be a magnesium ion (Mg²⁺).

a circus performer is coasting in a small cart at a velocity of 3.5 m/s east. As she coasts, she collided with a small weighted juggling pin that was at rest in the ground.

Answers

The momentum of the performer and cart will decrease.  The momentum of the juggling pin increases. The overall momentum of the entire system will remain the same.

What is law of conservation of linear momentum?

According to the law of conservation of momentum, the sum of the momentum of a body before and after the collision will be equal.

m₁.u₁ + m₂u₂ = m₁ v₁ + m₂.v₂

where m₁ & m₂ is the mass of objects, u₁ & u₂ are their initial speed while v₁ & v₂ is final speed.

Given the initial velocity of the performer and cart is u₁ = 3.5 m/s

The final velocity of the performer and cart = 3.4 m/s

As the velocity of the performer and cart decreases therefore its momentum will increase.

The juggling pin was at rest initially, but its velocity increased from 0 to 6 m/s. Therefore its momentum increases.

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How do you find the frequency of a wavelength example?

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Thus, from largest wavelength radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and ultimately gamma rays, which have the shortest wavelengths, are available.

How is the frequency example solved? The following are the many types of electromagnetic waves: radio waves, which have the longest wavelengths; microwaves; infrared; visible light; ultraviolet; x-rays; and ultimately, gamma rays, which have the shortest wavelengths.Subtract the duration of the event from the number of occurrences to determine frequency.Example:In Anna's calculation, the time is divided by the total number of webpage clicks (236). (one hour, or 60 minutes).Her average click rate is 3.9 per minute, she discovers.How many whole waves occur in a second is known as frequency.As a measure of frequency,Hertz (Hz = 1/second) is the unit of measurement for frequency.If a wave with a wavelength of 2 meters is moving at a speed of 6 meters per second, then 3 full waves pass by in a second.Consequently, the frequency is 3 waves per second (6/2), or 3.

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consider the circuit shown in (figure 1). the initial current in the inductor is is(0+) = 0.

Answers

The questions is incomplete so I answered it in general way.

I= 1/L∫Vdt, where I is the current flowing through the inductor, L is the inductor's inductance, and V is the voltage across the inductor, is the formula that determines the inductor current depending on these input parameters. You will frequently come across the expanded formula I= I0 + 1/L∫Vdt.

A passive two-terminal electrical device known as an inductor, also known as a coil, choke, or reactor, stores energy in a magnetic field as electric current passes through it. Typically, an inductor is made out of insulated wire twisted into a coil.

According to Faraday's law of induction, when the current through the coil changes, the time-varying magnetic field induces an electromotive force (emf) (voltage) in the conductor. Lenz's law states that the induced voltage has an opposing polarity (direction) to the change in current that caused it. Inductors so reject any changes in the current flowing through them.

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in an experiment with n = 6 and preal = 0.15, what is the power using a = 0.012 tail?

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An experiment with an a = 0.012 tail when N = 6 & Preal = 0.15 powered  is 1.0000

A scientific experiment where you do a series of actions and carefully track their outcomes to learn new knowledge. The students will conduct basic laboratory experiments. run, do, perform, or carry out an experiment.

Because it provides scientists with a set of well-organized steps to perform in order to reply to questions or assertions about the natural world, experimentation is essential to science. Additionally, experimenting produces vital data and results that help to verify the veracity and dependability of assertions made in an endeavor to fully know the world.

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a lathe rotating at is used to reduce the diameter of an long section of stock metal rod from a diameter of to at a feed rate of . the force measured at the tool post was down and pulling the tool toward the workpart. what is the specific energy of this material?

Answers

If a lathe turning at a feed rate is used to decrease a long section the stock metal rod's diameter from a diameter of to, the material's specific energy M RR = 109.96 cm3/min.

In hydrology, what is specific energy?

At any cross-section section of a canal, measured just above channel bottom, the total energy per cent weight of fluid. Where y is the flow depth, v seems to be the average velocity, & g is gravitational attraction, makes up the formula for specific energy, or E.

What is a substance's particular energy?

The proportion of necessary energy (E) towards the volume of removed material is referred to as specific energy (SE) (V). This variable can be used to calculate how much energy is expended on removing material.

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A microwave has a frequency of
90 GHZ. What is the energy of
electromagnetic radiation from
the microwave?

Answers

The energy of the electromagnetic radiation from the microwave is equal to 5.96 × 10⁻²³ J.

What is photon energy?

The energy carried by one photon of any electromagnetic radiation is known as photon energy. This energy is directly proportional to the frequency of electromagnetic radiations and inversely proportional to their wavelength.

To calculate the energy of the photon, we can use the following relation:

The mathematical formula of energy of photon: E = hc/λ

where E is energy, h = Planck's Constant is equal to  6.626 × 10⁻³⁴ Js and c = speed of light = 3 ×10⁸ms⁻¹, λ is wavelength of light

Given, the frequency of the electromagnetic radiation, ν = 90 GHz

ν = 90 ×10⁹ Hz

The energy of one photon microwave radiations is equal to E = hν

E = 6.626 × 10⁻³⁴Js ×  90 ×10⁹ s⁻¹

E = 596.34 × 10⁻²⁵

E = 5.96 × 10⁻²³ J

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What is the mass of an airplane that is flying at 246 m/s and has a momentum of 1.968 x 107 kg-m/s? Show your work.

Answers

The mass of an airplane is  79878 kg.

What is momentum?

The product of a particle's mass and velocity is its momentum. Momentum is a vector quantity, meaning it has both magnitude and direction. According to Isaac Newton's second equation of motion, the force acting on a particle equals the time rate of change of momentum.

Given that: an airplane is flying at 246 m/s and has a momentum of 1.968 x 10^7 kg-m/s.

Hence, mass of the airplane = momentum of the airplane/speed

=  (1.968 x 10^7 kg-m/s)/246 m/s

= 79878 kg.

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How many students in total are in Ridgewood Junior High School? feminists need the concept of social construction because it allows us to understand how gender, and other social categories such as race, class, and sexuality, are not fixed How many hours of higher education are required to become a certifiedpublic accountant?A. 190B. 200C. 120D. 150Answer: 150 (a) describe a procedure for identifying potential outliers, and use the procedure to decide whether there are outliers among the responses for the money spent on textbooks. (b) based on the stemplot, write a few sentences describing the distribution of money spent on textbooks for the 34 students. How do you make the discontinuous classes as continuous classes explain with an example? Would the government trying to prevent newspapers from publishing troop location be a violation of prior restraint? your textbook notes that when opioid abuse was disproportionately associated with african americans, it was labeled as criminal, but that when opioid abuse increased sharply among whites, it became labeled as What are the main uses for a checking account? Fill in the blanksF. Post-Audit of Investment Projects.1. Describe__________________________________________________________________________________________________________.2. Performing a post-audit is important for several reasons.a.b.c.3. A post-audit involves _________________________________________________________________________________________________.G. Internal Rate of Return (IRR).1. The internal rate of return method differs from the net present value method in that it finds the interest yield of the potential investment.a. The internal rate of return is the interest rate that will cause _______________________________________________________________b. The determination of the internal rate of return involves the use of a financial calculator or computerized spreadsheet to solve for the rate (if the cash flows are uneven).c. If the net annual cash flows are equal, an easier approach to solving for the internal rate of return can be used. This approach involves two steps:(1)(2)d. Internal Rate of Return Factor =e. Once managers know the internal rate, of return, they compare it to________________________________________________________f. The IRR decision rule is: ________________________________ ________________________________________________________.2. The two discounted cash flow methods differ as follows:a. Objective:(1)(2)b. Decision rule:(1)(2)H. Annual Rate of Return Method.1. The annual rate of return method is based directly on accounting data rather than on cash flows.a.b.c.d.e.f.g. PLEASE HELP ME ANSWER THE PHYSICS QUESTIONS ON MY PROFILE!!!i will give brainliest to the first to answer!!! this one and the other onesA 0.16 kg plastic ball moves with a velocity of 0.42 m/s. It collides with a second plastic ball of mass 0.017 kg, which is moving along the same line at a speed of 0.18 m/s. After the collision, both balls continue moving in the same, original direction. The speed of the 0.017 kg ball is 0.41 m/s. What is the new velocity of the 0.16 kg ball? What is an epic hero called? the ability of each cell to maintain a constant internal environment is called a. evolutionb. homeostasisc. metabolismd. adaptatione. its physiology please help, need answers asap!! 50.0 mL of a solution of hydrochloric acid (HCl) of unknown concentration reacts completely with 58.9 mL of 0.105 M sodium hydroxide (NaOH). What is the concentration of the hydrochloric acid? A simple random sample of n subjects is selected in such a way that every possible sample of the same size n has the same chance of being chosen. (A simple random sample is often called a random sample, but strictly speaking, a random sample has the weaker requirement that all members of the population have the same chance of being selected.) Determine whether each of the following is a simple random sample and a random sample. Complete parts a through c. .. a. In Major League Baseball, there are 30 teams, each with an active roster of 25 players. The names of the teams are printed on 30 separate index cards, the cards are shuffled, and one card is drawn. The sample consists of the 25 players on the active roster of the selected team. This sample a simple random sample. It v a random sample. b. For the same Major League Baseball population described in part (a), the 750 names of the players are printed on 750 separate index cards, and the cards are shuffled. Twenty-five different cards are selected from the top. The sample consists of the 25 selected players. This sample V a simple random sample. It v a random sample c. For the same Major League Baseball population described in part (a), a sample is constructed by selecting the 25 youngest players. This sample a simple random sample. It a random sample. Question 20 (1.42 points) Which statement best describes an Institutional Review Board (IRB)? O Subjects are told what the purposes of the study are, what participation in the study involves, what risks (if any) are involved in participating, and what the person can expect to receive in return for participation. O Subjects must be told the true purpose of the study and the reason for the deception. O Personal information will not be shared with anyone outside the immediate research group and any results from the research will not identify any of the participants by name. O They usually comprise people who have research experience themselves and therefore have experience that enables them to judge whether the research being proposed follows reasonable ethical guidelines. B Question 21 (1.42 points) Which is an example of a negative correlation? 1 O exercise and physical health O study time and grades O exposure to sunlight and plant growth O gas prices and the rate of driving When I was working for this company ............. to the other side of the city, it was very inconvenient.