Question

How much time is needed for a 15,000 W engine to do 1,800,000 J of work? (Power: P = W/t) 0.008 s 8 s 120 s 1,785,000 s

Answer 1

work done /time = power
1800000/15000=120s
btw ans was itself given in the ques...You sure are having alot of fun with the app, dont you?

Answer 2

Hey dear,

◆ Answer-
t = 120 s = 2 min

◆ Explaination-
# Given-
P = 15000 W = 1.5×10^4 W
W = 1800000 J = 1.8×10^6 J

# Solution-
Power of the engine is calculated by -
P = W / t

Rearranging,
t = W / P
t = 1.8×10^6 / 1.5×10^4
t = 120 s
t = 2 min

Therefore, the engine will take 120 s to do given amount of work.

Hope this helps you.
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