Aneutral metal comb is held near an object with a negative charge.

what happens to the comb?

a. the comb is charged by contact.

b. the comb is charged by friction.

c. the comb is charged by static discharge.

d. the comb is charged by induction.

Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity