Biology, 23.03.2020 00:46, rfvelasco

PLZ HELP I WILL GIVE BRAINLIESTWhich of the following statements is true? The ratio of work output to work input is always less than one. Only a few machines are 100 percent efficient. Efficiency is calculated by multiplying work input and work output. Some machines are frictionless.

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PLZ HELP I WILL GIVE BRAINLIESTWhich of the following statements is true? The ratio of work output t...