Your roommate leaves a 120 W fan running in your apartment. Over the course of an hour, how much thermal energy does th...

Question

Question

Your roommate leaves a 120 W fan running in your apartment. Over the course of an hour, how much thermal energy does the fan add to the air?

Answer 1

Answer #1

If we consider room as closed system then all the work done by fan is converted into thermal energy.

Energy dissipiated by fan = power × time

= 120 × 3600

= 432000 joules

= 432 KJ

Answer 2

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