With what speed must m1 rotate in a circle of radius r if m2 is to remain hanging at rest?

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

Diamond will scratch quartz. true or false

What object a collides with object b and bounces back its final momentum is?