If p = 380 n , determine the required minimum compression in the spring so that the wedge will not move to the right. neglect the weight of a and b. the coefficient of static friction for all contacting surfaces is μs=0.35. neglect friction at the rollers.

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.