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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)
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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)

User Andrew Simontsev
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1 Answer

25 votes
25 votes

Answer:

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-

User Pouriya
by
3.1k points
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