The visible spectrum of the electromagnetic spectrum is made up of which of the following?
a. infrared light
b. black light
c. red, orange, yellow, green, blue, and violet light
d. ultraviolet light

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

There are weak or strong attractive forces between atoms of liquids with a high viscosity

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?