The potential energy of a box on a shelf, relative to the floor, is a measure of
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If light has a wavelength of 600 nm in a vacuum, what is its wavelength in a material with an index of refraction of 1.50?
A. 600 nm
B. 900 nm
C. 400 nm
D. 
E. 267 nm
Of the objects lister, the one that you do NOT see BECAUSE of REFLECTED light is:
a. A painting b. The moon c. The wall of your home d. The sun
A moving particle is subject to conservative forces only. When its kinetic energy decreases by 10 J, what happens to its mechanical energy?
A. It increases by 10 J. B. It decreases by 10 J. C. It increases, but not necessarily by 10 J. D. It decreases, but not necessarily by 10 J. E. It remains the same.
Dez pours carbon tetrachloride (n = 1.46) into a container made of crown glass (n = 1.52). The light ray in glass incident on the glass-to-liquid boundary makes an angle of 24.0° with the normal. Find the angle of the corresponding refracted ray
a. 23.0° b. 0.437° c. 25.1° d. 60.4° e. 24.0°