A simple pendulum has a mass 7.2 kg and a length 2.27 meters. How much initial velocity v in m/s must be given to the mass with the pendulum if it is initially hanging vertically downward in order for it to later reach an angle of 56.8 degrees

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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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