Biology

Biology, 02.10.2019 03:50, cleef6451

Choose the correct answer to complete the sentence. the work output of a machine divided by the work input is the of the machine.
a. efficiency
b. effort
c. power
d. resistance

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Physics, 19.09.2019 02:00, GgRed

Calculate the efficiency for each machine, then answer the question. machine a has an input work of 1,000 j and an output work of 250 j. machine b has an input work of 500 j and an output work of 350 j. machine c has an input work of 200 j and an output work of 150 j. which machine is the most efficient?

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Physics, 21.09.2019 08:00, formulabmath

You have a machine that tells you exactly how much work in joules is put into a machine and how much work was produced. the readings that you just received from the machine state that the input work was 345 joules and the output work was 330 joules. the law of conservation of energy states that input should equal output. how can you explain the "lost" 15 joules?

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Biology, 13.10.2019 23:30, ninaaforever

When using a real machine to do work, input work will always be less than output work, because machines increase the amount of energy available. greater than output work, because energy is lost to the environment by the machine. equal to output work, because energy cannot be created or destroyed. different than output work, because the machine either creates or loses energy.

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