Question

An engine has an output energy of 2,400 J in 10 seconds. What is its average power in watts?

Answer 1

P = 240 W

Step-by-step explanation:

• By definition, the average power is the rate of change of Energy (in Joules) regarding time (in seconds), as follows:

`P = (\Delta E)/(\Delta t) (1)`

• Replacing in (1) by the givens of ΔE = 2, 400 J and Δt = 10 sec, we can find the average power in Watts as follows:

`P = (\Delta E)/(\Delta t) =(2,400J)/(10s) = 240 W (2)`