HELP PLEAS Convert the following:
a. 15.0 kg to N
b. 85.0 N to kg
c. 220 lb to N
d. 550 N to lb.

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

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

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?