Two equal positive charges q_1 = q_2 = 2.0μ∁ are located at x= 0, y=0.30m and x=0, y=-0.30m, respectively. What are the magnitude and direction of the total electric force that q_1 and q_2 exert on the third charge Q = 4.0μ∁ at x = 0.40m, y = 0?

When you turn on a battery-operated device, an electrical circuit is

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m