Which statement best describes why a machine is useful? a machine does a greater amount of work than the amount of work that is done on it. a machine does a smaller amount of work than the amount of work that is done on it. a machine can decrease both the input force and the input distance needed to do a given amount of work. a machine can decrease either the input force or the input distance needed to do a given amount of work.
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Physics, 21.06.2019 22:30, celibe9391
What is the earliest point in the universe that we can observe? why can’t we see back further than this?
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Explain what happens at the saturation point when adding salt to water at room temperature.
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Physics, 22.06.2019 13:30, brsglover8355
6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.
Answers: 2
Which statement best describes why a machine is useful? a machine does a greater amount of work tha...
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