A ray of light travels from a glass-to-liquid interface at an angle of 23°. Indices of refraction for the glass and liquid are, respectively, 1.58 and 1.80 . What is the angle of refraction for the ray moving through the liquid?
a. 26.4°
b. 20.1°
c. 17.5°
d. 20.2°
e. 26.2°
b
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Coefficient of performance is
A) 1 - Qcold/Qhot. B) Q/m. C) Qout/Win. D) Q - W. E) 1 - Tcold/Thot.
The pregalactic blobs had masses similar to
A) dwarf galaxies. B) the Sun. C) the Earth. D) the Milky Way. E) open clusters of stars.
Conservation of Momentum: A 14-cm diameter champagne bottle rests on its side on top of a frictionless horizontal table. Suddenly, the cork pops and the bottle slides backward, covering a distance of 22.0 cm in 0.44 s. If the mass of the bottle is 500 times the mass of the cork, find the distance from the original position that the cork will land on the table. Neglect air resistance and assume that the cork is very small compared to the bottle.
A. 3000 cm B. 60 m C. 85 m D. 8.5 cm
An atom with 6 protons and 6 neutrons is a carbon atom, and an atom with 6 protons and 7 neutrons is also a carbon atom.
Answer the following statement true (T) or false (F)