Help! please and thank you!

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

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