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Physics
Physics
Problem
Two bulbs, one rated
40
W
40\,\text{W}
40
W
and the other
60
W
60\,\text{W}
60
W
, glow for
2
h
2\,\text{h}
2
h
each. Which bulb converts more electrical energy into light and heat, and by how much work (in joules) does it exceed the other?
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