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A light bulb has a power output of 80 W and it has been left on for 90 seconds. How much work was done?
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A light bulb has a power output of 80 W and it has been left on for 90 seconds. How much work was done?

User James Harcourt
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7200 joules of heat and light energy was dissipated into the air. But no work was done ... no force moved through no distance.

User Enapupe
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