A liquid has an index of refraction of 1.33 . What is the speed of light through it? (c = 3.00 × 10^8 m/s)
a. 3.99 × 10^8 m/s
c. 4.46 × 10^8 m/s
b. 2.26 × 10^8 m/s
d. 2.04 × 10^8 m/s
B
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Earth's rotation is connected with a very slow celestial motion that can be detected only over _____
a. centuries b. decades c. a year d. a few months e. short brief periods
981539 u; a neutral hydrogen atom has a mass of 1.007825 u; a neutron has a mass of 1.008665 u; and a proton has a mass of 1.007277 u. (1 u = 931.494 MeV/c2)
A) 8.3 MeV B) 6.7 MeV C) 5.4 MeV D) 3.4 MeV E) 2.8 MeV
Adams and Leverrier both predicted the position of Neptune, based on its effects on:
A) the Sun. B) Jupiter. C) Saturn. D) Uranus. E) Pluto.
A farsighted boy has a near point at 2.3 m and requires contact lenses to correct his vision to the normal near point. What is the correct choice of lens power for the contact lenses?
A) -0.28 diopters B) +0.28 diopters C) -3.6 diopters D) +3.6 diopters E) +1.8 diopters