The potential energy of a charge q moving from a to b at point a is 5.4 × 10-10 joules and at point b is 2.3 × 10-10 joules. the charge is 2.5 × 10-15 coulombs. what potential difference does the particle undergo?

When an object is heated it contracts. a. true b. false

What causes the formation of ocean currents?

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.