Question

A 100 W engine generates 100 J of energy. How long did it run for?

Answer 1

1 s

Step-by-step explanation:

The power, the energy, and the time are related by the following equation

`P=(E)/(t)`

Solving for t, we get:

`t=(E)/(P)`

Replacing the energy E = 100 J and the power P = 100W, we get:

`t=\frac{100\text{ J}}{100\text{ W}}=1\text{ s}`

Therefore, the answer is 1 s.