Select the correct answer.
Anthony shines a beam of light on the surface of a solution of glycerol at a certain angle. If the angle of refraction is 38°, what is the angle of
incidence? The index of refraction of glycerol is 1.47, while that of air is 1.00.
A 38°
B. 45°
C. 55°
D. 65°
E. 70°
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Which of the following is an example of units for speed

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.