How long would it take a 400 W motor to transfer 2000 J of energy
5s
50s
0.2s
0.02s

it's answer is 5 seconds,

Explanation:

Given

Power (p) = 400 watt

work (w) = 2000 J

time taken (t) = ?

we know that,

p = w/t

400 = 2000 / t

t = 2000/400

Therefore t = 5 sec

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hope this !