Answers

2016-03-03T17:07:59+05:30
Power = work done/time or energy

we will covert time 

1 hour = 60 * 60 s

energy = power *time = 60 * 60 * 60 = 1.08 × 10 ∧ 5 J
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2016-03-03T17:22:49+05:30
Power = workdone or energy / time
then....
energy = power X time So. energy = (60watt) X(60X60)
energy = 216000 J
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