A crane lifts a 614 kg roof 9.3 m high above the ground at a constant speed. It takes 48.4 seconds to do so. Calculate the work done by the crane.

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Explanation:

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

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