A force of 2910 N is needed to bring a car moving at 26.2 m/s to a halt in 20.1 s.
What is the mass of the ear:
Answer in units of kg.

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.