Abackhoe lifts 22,000 newton 's of steel a distance of 15m in 44 second. how much power did the crane require to lift the girder.

7500 W

Explanation:

First of all, we need to find the work done by lifting the steel. This is given by

where:

F = 22,000 N is the force applied

d = 15 m is the displacement of the steel

Solving the equation,

Now we can find the power of the crane, which is given by

where

W is the work done

t = 44 s is the time elapsed

Substituting into the formula,

where are the vectors ?

d. platinum would have the greatest temperature increase because it has the lowest specific heat.