A proton is moved 5 cm closer to the negative plate in an oppositely charged parallel plate arrangement. Ignoring any changes in gravitational energy and if the strength of the field inside the plates is 600 N/C. Find: a. the work done in moving the proton.
b. the sign of the work done in moving the proton.
c. the PE gained/lost by the proton
d. Was it gained or lost?

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation