Momentum: 3
Mass A has a mass of 10 kg while mass B has a mass of 20
kg. Which of these must be true?

yup its correct its: c) b b

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.

0.11 m/s and 0.28 m/s should be correct