two equal negative point charges repel each other with a force of 18.0 mN. What is the charge on each object if the distance between them is 9.00cm? How many extra electrons are on each object?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b. b. at twice the distance, the magnitude of the field is 2b. c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?