Atire hanging from a tree is at rest. the force of gravity is pulling down on the tire. another force, called tension, is pulling up on the tire. tension is the pulling force that is transferred along the length of a string or rope. if the force of tension is equal to the force of gravity, then what will happen to the tire?

the answer is that the tire will remain rest, An object that is at rest will stay at rest until an unbalanced force acts on it. The two forces acting on the tire are balanced because they are equal in magnitude and opposite in direction. Therefore, the tire will remain at rest.

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.

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.