Question

If a machine requires an input of 600 J of work to put out 5000 J of work, what is the machine's efficiency?
efficiency= output work/ input work x 100%

A.100%
B.83%
C.120%
D.40%
Answered by Damon
Bot that is BACKWARDS !!!
Answered by Damon
The problem statement gives more output than input. It is impossible.
I suspect it means
600 in
and
500 out
100 *(5/6) = 83.33 percent
Answered by Damon
Whew :)
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