What work does a 5 kW motor do in 0.5 h?

Engine power can be calculated using the formula:
N = A / t, where N is the engine power (N = 5 kW = 5 * 10 ^ 3 W), A is the work done by the engine (J), t is the engine operating time (t = 0.5 h = 0 , 5 * 60 * 60 s = 1800 s).
Let us express and calculate the work done by the engine:
A = N * t = 5 * 10 ^ 3 * 1800 = 9,000,000 J = 9 * 10 ^ 6 J = 9 MJ.
Answer: The work done by the engine is 9 MJ.