true or false? anything that moves up and down or back and forth in a rhythmic way is vibrating.

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

The ph is the a.independent variable b.the dependent variable c.control group

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.