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4 years ago

What is power?

Physics

2 answers:

Scrat [10]4 years ago

7 0

This question asks you what power is.

Your answer would be B) Power is the rate at which work is done

Power is not the amount of work that is being placed, but is a rate that could be measured.

For example, when you use more power, you would get things done more quickly. When you use less power, you get things done less quickly.

A visual example of the rate of power is charging an electric car. The more power you use to charge the car, the more quicker the car gets charged.

People mistakenly get mixed up with answer choice A, due to the fact that they see the word "rate", but the rest of the statement is false.

Therefore, answer choice B) Power is the rate at which work is done would be the correct answer.

e-lub [12.9K]4 years ago

4 0

Answer:

B) Power is the rate at which work is done

You might be interested in

The unit for measuring electric power is the

bazaltina [42]

C.) The measuring unit of "Electrical Power" is "Watt"

Hope this helps!

4 0

3 years ago

Ballon volume of 3200ml of xenon gas is at a gauge pressure of 122kPa and a temperature of 27c. What is the volume when the ball

N76 [4]

Given:

The initial volume of the gas, V₁=3200 ml=3.2×10⁻³ m³

The initial pressure of the gas, P₁=122 kPa

The initial temperature of the gas, T₁=27 °C=300 K

The final temperature, T₂=65 °C=338 K

The final pressure, P₂=112 kPa

To find:

The final volume of xenon gas.

Explanation:

From the combined gas law,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

Where V₂ is the volume after it is heated.

On rearranging the above equation,

$V_2=\frac{T_2P_1V_1}{T_1P_2}$

On substituting the known values,

$\begin{gathered} V_2=\frac{338\times112\times10^3\times3.2\times10^{-3}}{300\times112\times10^3} \\ =3.61\text{ m}^3 \end{gathered}$

Final answer:

The volume of the balloon when it is heated is 3.61 m³

4 0

1 year ago

At a certain instant an object is moving to the right with speed 1.0 m/s and has a constant acceleration to the left of 1.0 m/s2

professor190 [17]

Explanation:

Given that,

Initial speed of the object, u = 1 m/s

Acceleration of the object, $a=-1\ m/s^2$

We need to find the time when the object comes at rest (v=0). Let it is given by :

$t=\dfrac{v-u}{a}$

$t=\dfrac{0-1\ m/s}{-1\ m/s^2}$

t = 1 second

So, the object will comes to rest at 1 second. Hence, this is the required solution.

5 0

3 years ago

Choose the pair of elements that will most likely have the least ionic character.

Alinara [238K]

I think the answer is c h and o

3 0

3 years ago

Read 2 more answers

An ideal incompressible fluid flows at 12 m/s in a horizontal pipe. If the pipe widens to twice its original radius, what is the

grandymaker [24]

Answer:

d) 3 m/s

Explanation:

As we know by equation of continuity

$A_1v_1 = A_2v_2$

here we have

$A_1 = \pi r^2$

$A_2 = \pi (2r)^2$

$A_2 = 4\pi r^2$

now from above equation we have

$\pi r^2 v_1 = 4\pi r^2 v_2$

$v_2 = \frac{v_1}{4}$

here we have

$v_1 = 12 m/s$

$v_2 = 3 m/s$

5 0

3 years ago