The u. s army’s parachuting team, the golden knights, are on a routine
jumping mission over a deserted beach. on a jump, a 65-kg knight lands on the beach with a speed of 4.0 m/s, making a 0.20-m deep indentation in the sand with what average force did the parachuter hit the sand?

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.