The index of refraction of diamond is 2.42. This means that a given frequency of light travels
A)
2.42 times faster in air than it does in diamond.
B)
2.42 times faster in diamond than it does in air.
C)
2.42 times faster in vacuum than it does in diamond.
D)
2.42 times faster in diamond than it does in vacuum.
E)
2.42 times faster in vacuum than it does in air.
C
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Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz is
A) 0.3 m. B) 3.0 m. C) 30 m. D) 300 m. E) none of the above
The dissociation energy of the hydrogen molecule is approximately 5 eV. What is the temperature of a monatomic molecule whose kinetic energy is equal to 5.000 eV?
a. 28990 K b. 57970 K c. 38650 K d. 23190 K e. 12880 K
A white dwarf cools slowly into a _________________ dwarf
Fill in the blank(s) with correct word
A small lead sphere of mass m is hung from a spring of spring constant k. The gravitational potential energy of the system equals zero at the equilibrium position of the spring before the weight is attached. The total mechanical energy of the system when the mass is hanging at rest is
A.
B.
kx2.C.
D.
kx2.E.