It takes 58 n of force to keep a 76 kg refrigerator box sliding along the floor at a constant velocity. what is the coefficient of kinetic friction between the box and the ground?

I put the answer in the attachment

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.