Extra credit: a thin uniform rod of mass m and length lis bent at its center so that the two segments are now perpendicular to each other. in cos tar a. find its moment of inertia about an axis perpendicular to the plane defined by the angle and passing through the point where the two segments meet. ab. find its moment of inertia about an axis perpendicular to its plane and passing through the midpoint of the line connecting its two ends.

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.