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17.) A microwave is rated at 750 watts. How long will it take the microwave to do 5700 J of work on a cup of water? Assume 100% efficiency.
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17.) A microwave is rated at 750 watts. How long will it take the microwave to do 5700 J of work on a cup of water? Assume 100% efficiency.

User Terreb
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To answer the question above, we make use of the equation,
Work = Power x time
From the equation, time may be solved through
time = Work / Power
Substituting the known values from the given,
time = (5700 J) / (750 J/s)
= 7.6 s
User Niederee
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