Physics, 02.08.2019 04:40 gpinney1883
Engineers who design battery operated devices such as cell phones and mp3 players try to make them as efficient as possible and engineer test a cell phone and finds out the battery supplied 10000 joules of energy to make 5500 joules of output energy in the form of sound and light for the screen how efficient is the phone
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Engineers who design battery operated devices such as cell phones and mp3 players try to make them a...
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