Circular motion lab the pointer. (5) using a stopwatch determine the time it takes for 20 orbits. you will have to keep rotating the pole to keep its radius ! (6) attach the mass holder around the pulley and connect it to the rotating mass. add mass to the holder until the rotating mass is directly over the pointer. remember that holder is 50 grams. (7) repeat steps () for different pointer positions

Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.