Physics, 12.12.2020 17:00 mercedesamatap21hx0
A crane used 250,000 Joules of work to move a beam to the top of a building in 20 seconds. How much power did the crane use?
a) 5,000,000 W
b) 5,000 W
c) 50 J
d) 12,500 W
Answers: 3
 
 = 12500W
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A crane used 250,000 Joules of work to move a beam to the top of a building in 20 seconds. How much...
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