Question

3. How long (means time) must a 400 W electrical engine work in order to produce 300 kJ of work? (p = W/t. T = w/p)

Answer 1

7.5 sec

Step-by-step explanation:

400 • t = 3000

(the 300 kJ was turned into 3000 J)

divide both sides by 400

400t/400 = 3000/400 ——-> 7.5

The answer becomes 7.5 sec

I hope it helps! Have a great day!

Anygays-