Question

If an engine does 400 J of work in 10 s, how much power was generated?A. 40 WB. 400 WC. 4 WD. 4000 W

Answer 1

Given:

The work is

`W=400\text{ J}`

The time is

`t=10\text{ s}`

To find:

The power generated

Step-by-step explanation:

The power is,

`\begin{gathered} P=(W)/(t) \\ =(400)/(10) \\ =40\text{ W} \end{gathered}`

Hence, the power is 40 W.