Use the rulers to make measurements to determine the amount of water displaced when the weight is added to the tub. (Pivot interactive lab)

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.

it has to be b, about 97 percent.

the closer the planet is to the sun, the larger the gravity