Question

1. you reach for a doorknob and before you touch it, a jolt of static electricity shocks you. this demonstrates that... 10 pointselectric forces can only transfer by direct contact, or touch.electric forces cannot transfer from one object to another.electric forces can act at a distance.2. which of the following is an example of an electric force acting at a distance? 10 pointspam applies a force to the head of a nail by pounding it with a heavy iron hammer. the nail then wedges itself between the fibers of a wooden board.pam jumps out of an airplane. air rushes past her body a very high speeds as she falls. she then opens her parachute and feels an upward force.pam rubs a glass rod with wool, then moves the rod over a pile of small paper scraps. the scraps leap into the air and stick to the rod.pam applies a twisting force to the steering wheel of her car. this force pushes on tubes filled with fluid, which then push the wheels of her car to one side.3. which of the following best describes a non-contact force? *10 pointsa force that is able to act at a distancea force that always pushes objects forwarda force that always pulls objects backwarda force that must be physically touching the object it acts on

Explanation:

First Question:

The static shock happens before touching the doorknob, meaning the electric force acts without direct contact.

Second Question:

When a rubbed glass rod lifts paper scraps without touching them, this is an electric force acting across a distance. The other options involve contact forces.

Third Question:

By definition, non-contact forces exert their effect without physical contact, which means they act at a distance.

Answer:

1. electric forces can act at a distance.
2. Pam rubs a glass rod with wool, then moves the rod over a pile of small paper scraps. The scraps leap into the air and stick to the rod.
3. a force that is able to act at a distance