People playing a basketball game in a gymnasium make up a closed system with 17,125 J of energy. At the beginning of the game the system has 16,250
J of ME, and at the end it has 1,135 J of ME. How much of the total energy
was transformed into thermal energy during the game?
A. 875 J
B. 15,115 J
C. 15,990 J
D. 2,010 J

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

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.

Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence