10. You throw a ball straight down off the Empire State Building. It takes the ball 22 seconds to land. Ignore air resistance. What speed did you throw the ball? (search height of Empire State Building)​

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

How many atoms of nitrogen are in the chemical formula ni(w on

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.