HI PLEASE HELP!

How do glow sticks affect the temperature of hot an cold water?

Will give brainliest. Will report any links or irrelevant answers so don’t even try.

Answers

Answer 1

Answer:

Chemical reactions occur slower at lower temperatures and faster at higher temperatures. When you put a glow stick in cold water, the chemical reaction slows down but will last for a longer period of time. When you put a glow stick in hot water, the reaction speeds up but will be over quicker.

Explanation:

(self-explanatory)

I hope this helps, have a nice day.


Related Questions

Using organisms such as fungi to detoxify a polluted area is called

A. sustainable use
B. bioremediation
C. endemic treatment
D. edge effect

Answers

Answer:

bioremediation :)

Explanation:

what is negitive acceleration?

Answers

According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object has a negative acceleration.An object with negative acceleration could be speeding up, and an object with positive acceleration could be slowing down.

Answer:

Answer

When decrease in velocity is called negative acceleration

Explanation:

If a positively charged rod is brought near the knob of a positively charged electroscope, the leaves of the electroscope will...
A) converge, only
B) diverge, only
C) first diverge, then converge
D) first converge, then diverge

Answers

I think it’s gonna be A.

Answer:

B

Explanation:

if a positively charged rod is brought near the knob of a neutral electroscope, it will attract some electrons up from the leaves onto the knob. That process causes both of the leaves to be positively charged (excess protons), and the leaves will diverge.

What Do Alien Civilizations Look Like?

Answers

Answer:

We dont know. It can look like anything

Explanation:

Although it's thought to be highly probable, we have no reliable evidence that aliens exist.

What is the kinetic energy of an a 7.1 kg sled with a velocity of 5.7 m/s?

Answers

Answer:

115.3395 j

Explanation:

K= 1/2mv²= (7.1/2)*5.7² = 115.3395 j

Answer:

115.34 J

General Formulas and Concepts:

Energy

Kinetic Energy Formula: [tex]\displaystyle KE = \frac{1}{2}mv^2[/tex]

m is mass (in kg)v is velocity (in m/s)

Explanation:

Step 1: Define

Identify variables

[Given] m = 7.1 kg

[Given] v = 5.7 m/s

[Solve] KE

Step 2: Solve for KE

Substitute in variables [Kinetic Energy Formula]:                                       [tex]\displaystyle KE = \frac{1}{2}(7.1 \ kg)(5.7 \ m/s)^2[/tex]Evaluate exponents:                                                                                     [tex]\displaystyle KE = \frac{1}{2}(7.1 \ kg)(32.49 \ m^2/s^2)[/tex]Multiply:                                                                                                         [tex]\displaystyle KE = (3.55 \ kg)(32.49 \ m^2/s^2)[/tex]Multiply:                                                                                                         [tex]\displaystyle KE = 115.34 \ J[/tex]

Topic: AP Physics 1 - Algebra Based

Unit: Energy

Book: College Physics

A cyclist is riding his bike up a mountain trail. When he starts up the trail, he is going 8 m/s. As the trail gets steeper, he slows to 3 m/s in 1 minute. What is the cyclist's acceleration?Felipe drives his car at a velocity of 28 m/s. He applies the brake, which slows the vehicle down at a rate of 6.4 m/s2 and causes it to slow to a stop. How long does it take for the car to stop? Round your answer to the nearest tenth.

Answers

Answer:

a)   a = - 0.0833 m / s²,  b)   t = 4.4 s

Explanation:

a) this is a kinematics exercise where the acceleration is along the inclined plane

         v = v₀ - a t

         a = v₀ - v / t

         a = 3 - 8/60

         a = - 0.0833 m / s²

b) in this case the final velocity is zero

         v = v₀ - a t

         0 = v₀ - at

         t = v₀ / a

         t = 28 / 6.4

         t = 4.375 s

         t = 4.4 s

If you have a frequency of 99Hz what is your period?

Answers

Answer:

frequency=1/time period

99HZ*time period=1

time period=1/99HZ

=0.01 second

Explanation:

Una lámpara requiere 5 A y presenta una resistencia de 20 Ω, cuando está
encendida.
a. ¿Cuál es la tensión?
b. ¿Qué resistencia adicional requiere si se desea operar a 120 V?
c. ¿Y 110 V?

Answers

Answer:

a. V = 100 voltios

b. Para 120 V → [tex]R_{2} = 4 \Omega[/tex]

c. Para 110 V → [tex]R_{2} = 2 \Omega[/tex]

Explanation:

a. La tensión se puede calcular mediante la ley de Ohm:

[tex] V = IR [/tex]

V: es el voltaje o tensión =?

I: es la corriente = 5 A

R: es la resistencia = 20 Ω

Entonces, la tensión es:

[tex]V = IR = 5 A*20 \Omega = 100 V[/tex]

b. La resistencia adicional es la siguiente:

[tex] R_{2} + R_{1} = \frac{V}{I} [/tex]

[tex]R_{2} = \frac{V}{I} - R_{1} = \frac{120 V}{5 A} - 20 \Omega = 4 \Omega[/tex]

     

c. La resistencia adicional para operar a 110 voltios es:

[tex]R_{2} = \frac{V}{I} - R_{1} = \frac{110 V}{5 A} - 20 \Omega = 2 \Omega[/tex]

Espero que te sea de utilidad!

plsss plsss plsss helppppp ASAP thank u ❤️​

Answers

Answer:

7. (D) uniformly accelerated vertical motion

8. (A) zero

9. (A) zero

10. (C) parabolic

Answer:

7.Uniformly accelerated vertical motion

8.0m/s²

9.9.8m/s

10.parabolic

11.vertical component.

Un motor realiza un trabajo de 5000 j en 20 s a) ¿ cual es la potencia del motor ?B)¿en cuanto tiempo desarollan el mismo trabajo una maquina de 15 w ?

Answers

Answer:

a. Potencia = 250 Watts

b. Tiempo = 333.33 segundos

Explanation:

Dados los siguientes datos;

Energía = 5000 Joules

Tiempo = 20 segundos.

Para encontrar el poder;

Poder = energía/tiempo

Potencia = 5000/20

Potencia = 250 Watts

B. ¿Para saber cuánto tarda una máquina en realizar el mismo trabajo;

Dado: potencia = 15 W

Tiempo = energía/poder

Tiempo = 5000/15

Tiempo = 333.33 segundos

What is the period of a sound wave with a frequency of 20Hz?

Answers

Answer is 0.05

Explanation


Questions
1. Why does pressure on a diver increase with
depth?​

Answers

Answer:

The weight of the water above a diver exerts pressure on their body. The deeper a diver descends, the more water they have above them, and the more pressure it exerts on their body

Which example below is the most complex component of a multicellular organism?

Question 20 options:

Skin cell


Heart


Muscle Tissue


Reproductive System

Answers

the answer should be c.

Physics class, need hell

Answers

Answer:

325.76 revolutions

Explanation:

The tire radius is diameter/2: 42/2 = 21

And now we can discover the lenght of the tire circumference. The lenght of a circumference is given by 2×radius×π, and let's consider π=3.14, and let's use the radius in meter (21 cm = 0.21 m):

2•0.21•3.14 = 1.32 m of lenght

Now, you divide the distance the car moved by the lenght of the tire circumference and you will find how many revolutions the tire makes:

420/1.32 = 325.76

Please hurry Describe why electric currents can be dangerous. ***what causes it to happen in the circuit not biology****

Answers

Answer:

Basically, the main risk is cardiac arrest, caused by the electric current interfering with the normal operation of the heart muscle. Other possible damages are burns due to the electric energy vaporizing the water inside the cells, and nerve damage caused by excessive current through the nerves.

The main hazards of working with electricity are:

Electric shock and burns from contact with live parts.Injury from exposure to arcing, fire from faulty electrical equipment or installations.

Explanation:

they can electrocute your to death and fry your brain

How to find the acceleration?

Answers

Answer:

speed/time

Explanation:

Answer:

a= (Vf - Vi)

         t

To find acceleration (a) you need to subtract the finale velocity (Vf) minus the initial velocity (vi) divided by time (t) as shown in the equation above.

If you shine a light of frequency 375hz on a double slit setup , and you measure the slit separation to be 950 nm and the screen distance to be 4030 nm away , what is the distance from the zero order fringe to the first order fringe ?

Answers

Answer:

y = 33.93 10⁵ m

Explanation:

This is an interference exercise, for the contributory interference is described by the expression

           d sin θ = m λ

let's use trigonometry for the angle

           tan θ = y / L

how the angles are small

          tan θ = sin θ / cos tea = sin θ

 

we substitute

         sin θ = y / L

        d y / L = m λ

         y = m λ L / d

the light fulfills the relation of the waves

       c = λ f

       λ = c / f

       λ = 3 10⁸ /375

       λ = 8 10⁵ m

first order m = 1

let's calculate

        y = 1  8 10⁵  4030 10-9 / 950 10-9

        y = 33.93 10⁵ m

A flywheel slows from 600. to 416 rev/min while rotating through 34.0 revolutions. What is the angular acceleration of the flywheel

Answers

Answer: [tex]\alpha=4.798\ rad/s^2\quad [\text{deceleration}][/tex]

Explanation:

Given

Initial revolution of flywheel [tex]N_1=600\ rpm[/tex]

(Initial angular velocity [tex]\omega_i=\dfrac{2\pi N_1}{60}[/tex])

Final revolution of flywheel [tex]N_2=600\ rpm[/tex]

(Final angular velocity [tex]\omega_f=\dfrac{2\pi N_1}{60}[/tex])

Revolution turned [tex]34[/tex]

So, angle turned is [tex]\theta =2\pi \times 34\\[/tex]

Using equation of angular motion i.e. [tex]\omega_f^2-\omega_i^2=2\cdot \alpha \cdot \theta[/tex]

[tex]\Rightarrow \left(\dfrac{2\pi \times 416}{60}\right)^2-\left(\dfrac{2\pi \times 416}{60}\right)^2=2\alpha \times (68\pi )\\\\\Rightarrow \alpha=\dfrac{1898.344-3948.86}{427.312}\\\\\Rightarrow \alpha =-4.798\ rad/s^2\\\Rightarrow \alpha =4.798\ rad/s^2\quad [\text{deceleration}][/tex]

true or false force vectors have direction only​

Answers

Answer:

The answer is true

Explanation:

:D

TRUE - Vectors are fully described by magnitude AND direction; scalars are not described with a … ... True or False: A scalar quantity has both magnitude and direction, whereas a vector quantity is described by only its direction. Force is not a SCALAR because it always has a DIRECTION, making it a VECTOR.


Hope that helps :()

what is the lowest frequency of a standing wave that has the fewest number nodes and antinodes​

Answers

Answer:

Fundamental frequency

What would the axes be labelled on a graph that allows you to calculate VELOCITY?

Answers

Velocity
And velocity Velocity

Drag each tile to the correct box a chemical reaction takes place in which energy is released arrange the reactions characteristics in order from start to finish

Answers

where are the tiles my wise sir

When an object is moving towards us the waves compresses in a way that it has

Answers

Answer: The waves are compressed as the item moves closer to you, so their wavelength is shorter.

Explanation:

PLEASE DO THIS SCIENCE QUESTION I WILL MARK YOU THE BRAINLIEST NO LINKS

Answers

Answer:

Float

Explanation:

The objects weight 14n and the buoyant force is 12n, so it will sink because the weight is greater than the buoyant force.  

Equation: p = m/v

Please help with this question​

Answers

Answer:

This unbalanced force causes her to change in direction.

If the forces on an object are unbalanced, this is what happens:

a stationary object starts to move in the direction of the resultant force

a moving object changes speed and/or direction in the direction of the resultant force

[tex]\boxed{\large{\bold{\textbf{\textsf{{\color{blue}{Answer}}}}}}:)}[/tex]

A skier is at the top of the mountain facing east. The skier then decides to skis to the westward side of the mountains and pushes off .The unbalanced for causes her to change in Direction.

If a red star and a blue star both have the same radius and both are the same distance from Earth, which one looks brighter in the night sky? Explain why.

Answers

Answer:

The blue one.

Explanation:

Im pretty sure its because the blue is hotter.

In regard to the Compton scattering experiment with x-rays incident upon a carbon block, as the scattering angle becomes larger, what happens to the magnitude of difference between the incident and scattered wavelengths

Answers

Answer:

Increases

Explanation:

In the Compton scattering experiment with x-rays,

The change in operation

[tex]\Delta \lambda = \frac{h}{m_oc} [1-cos\theta][/tex]

Now rest being constant, as \theta increases, cos\theta decreases

Hence, The change in wavelength will increase with the increase in \theta.

Hence, wavelength increases with an increase in the angle of scatttering.

A 5 kg ball is thrown at 4 m/s. What is the ball’s momentum

Answers

Answer:

20kgm/s

Explanation:

p=mv

p=5*4

p=20kgm/s


Steph uses 18 Newtons of force to push a piano up a ramp. She uses a total of 900 Joules getting this piano into the moving truck. Calculate the
distance of the ramp.

Answers

[tex]\huge{ \mathcal{  \underline{ Answer }: }}[/tex]

[tex] \boxed{ \mathrm{Work done = Force × displacement}}[/tex]

[tex]900 = 18 \times d[/tex]

[tex]d = \dfrac{900}{18} [/tex]

[tex]d = 50[/tex]

Therefore the distance covered :

[tex] \large \boxed{50 \: m}[/tex]

_____________________________

[tex]\mathrm{ ☠ \: TeeNForeveR \:☠ }[/tex]

You accidentally slide a glass of iced tea off a table that is 0.75 m tall. How
long does it take the tea to hit the ground?
A. 0.54 s
B. 0.39 s
C. 0.23 s
D. 0.47 s

Answers

Answer:

0.39 seconds

Explanation:

Given:

Distance, S = 0.75 m

Acceleration due to gravity, g = 9.81 m/s^2

Initial (vertical) velocity, u = 0 m/s

Final velocity,

S = ut + (1/2)gt^2

0.75 = 0(t) + (1/2)(9.81)t^2

t^2 = 0.75/(9.81/2) = 0.1529 s^2

t = sqrt(0.1529) s.

= 0.391 s.

The time it takes an object to fall a certain distance is 0.39 s. Therefore, option (B) is correct.

What is kinematioc equation?

To determine how long it takes for the glass of iced tea to hit the ground, we can use the kinematic equation that relates the distance, time, initial velocity, and acceleration of an object under free fall.

Assuming the glass is dropped from rest, its initial velocity is zero, and the acceleration due to gravity is[tex]-9.8 m/s^2[/tex] (negative because it is acting in the opposite direction to the motion).

Using the equation:

[tex]d = 1/2 * a * t^2[/tex]

where d is the distance, a is the acceleration due to gravity, and t is the time, we can solve for t:

[tex]0.75 m = 1/2 * (-9.8 m/s^2) * t^2[/tex]

Simplifying this equation gives:

[tex]t^2 = 0.75 m / (1/2 * 9.8 m/s^2) = 0.153[/tex]

Taking the square root of both sides gives:

[tex]t = sqrt(0.153) = 0.39 s[/tex]

Therefore, the correct option is B. It takes approximately 0.39 seconds for the glass of iced tea to hit the ground.

Learn more about acceleration, here:

https://brainly.com/question/12550364

#SPJ7

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