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Physics, 22.06.2019 05:00, caguil00
Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.
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Physics, 22.06.2019 18:00, cratsley321
By what primary heat transfer mechanism does the sun warm the earth?
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Physics, 23.06.2019 04:31, dontrailgrant98
A90db sound wave strikes an eardrum whose area is 5.0Ă—10^-5m^2. how much energy is absorbed by the eardrum per second
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