Posted by **Aly** on Thursday, December 31, 2009 at 12:11pm.

If a lightbulb uses 60 watts of power. If the light bulb is run for 5 hours everyday of a 30-day month how much energy did the lightbulb use? Answer in k Wh.

- Science -
**Writeacher**, Thursday, December 31, 2009 at 12:33pm
Assistance needed.

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- physics -
**MathMate**, Thursday, December 31, 2009 at 2:10pm
Total energy used

= 60 watts * 5 hr/day * 30 days

= 9000 watt-hours

= 9 kilowatt-hours

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