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Which of the following statements is true? Efficiency is calculated by multiplying work input and work output. Only a few machines are 100 percent efficient. Some machines are f…

Which of the following statements is true? Efficiency is calculated by multiplying work input and work output. Only a few machines are 100 percent efficient. Some machines are f…
asked 56.3k views
13 votes
Which of the following statements is true?

Efficiency is calculated by multiplying work input and work output.
Only a few machines are 100 percent efficient.
Some machines are frictionless.
The ratio of work output to work input is always less than one.

asked
User ShreeshaDas
by
8.5k points

2 Answers

1 vote

Answer:

The ratio of work output to work input is always less than one.

answered
User Michal Minich
by
8.1k points
10 votes
its d!!!!!!!!!!!!!!!!
answered
User Albee
by
7.4k points
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