Question

Henry sets his keys on a wooden table.


He then takes a powerful magnet and positions it below the table and the keys. He finds that he is able to drag the keys along the table by moving the magnet. This demonstrates that
A.
magnetic forces act on wooden objects.
B.
magnetic forces act at a distance.
C.
gravitational forces are contact forces.
D.
gravity is proportional to mass.

Answer 1

Answer:

The answer is, Magnetic forces act at a distance.

Explanation:

Answer 2

Answer:

magnetic forces act at a distance.

Explanation:

Magnetic forces act at a distance. Some forces must be in direct contact with an object in order to act on it. Magnetic forces, on the other hand, can push or pull certain objects without ever touching them.

Henry is able to move his keys along the table without touching them. A magnetic force acts on the keys through the table.