Question

1. what is power in physics? 15. what is the formula for power? 16. what are the units of power? 17. what is the difference between energy and power?

Explanation:

1. In physics, power is the rate at which work is done or energy is transferred.
2. The formula for power is $P=\frac{W}{t}$, where $P$ is power, $W$ is work done, and $t$ is time. Another common formula is $P = Fv$ (when force $F$ and velocity $v$ are in the same - direction), applicable in mechanical situations.
3. The SI unit of power is the watt (W), where 1 watt is equal to 1 joule per second (1 W = 1 J/s).
4. Energy is the ability to do work, a scalar quantity measured in joules. Power is the rate of energy transfer or work - done, measured in watts. Energy is an amount, while power is a rate.

Answer:

1. Power is the rate of work - done or energy transfer.
2. $P=\frac{W}{t}$ and $P = Fv$ (in some mechanical cases).
3. Watt (W), 1 W = 1 J/s.
4. Energy is the ability to do work (measured in J), power is the rate of energy transfer (measured in W).