Two particles with charges 2q and q are separated by a distance r. The 2q particle has an electric field E at distance r and exerts a force F on the q particle. When the q particle is replaced by a 4q particle, what will be the electric field and force from the 2q particle experienced by the 4q particle

What happens to the light rays when they hit the specimen?

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

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