When we say that electricity is flowing through a wire, what is specifically flowing through the wire?

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples