4. In a cathode ray tube, the number of electrons that reach the fluorescent screen
is controlled by the
A. anode.
B. deflecting plate.
C. grid.
D. cathode.

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?