What is the wave speed if the period is 7.0 seconds and the wavelength is 2.1 m?
(Please show how you got it)

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted