At a construction site, a crane lifts an object to a certain height in 12 seconds and a second crane does the same work in 6 seconds. Compared to the power developed by the first crane, the power
developed by the second crane Is which of the following?
The same
Twice as much
One-half as much
Four times as much
Answers: 3
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At a construction site, a crane lifts an object to a certain height in 12 seconds and a second crane...
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