You're sitting on Ocean Beach in San Francisco on one finr afternoon and you notice that the waves are crashing on the beach about 6 times every minute. youe estimate that it takes 1 wave about 4 seconds to travel from a surfer 30m off shore to the beach. what is the velocity​

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

What is the difference between a solar cell and a solar panel

Neil armstrong, the first human being to step on the moon, left a foot print that is essentially unchanged nearly 50 years later. how is it possible for this, and all the other footprints, tracks and markings, left on the lunar surface to remain unchanged for so long?