Waves on a String: The speed of sound in steel is 5000 m/s. What is the wavelength of a sound wave of frequency 660 Hz in steel?
A. 7.58 m
B. 2.41 m
C. 1.21 m
D. 0.829 m
E. 0.132 m
Answer: A
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How does gravitational energy depend on the height, h, of an object?
A. mh^2 B. mh C. mgh^2 D. mgh
When you push an object a certain distance while applying twice the force, you do
A) twice as much work. B) four times as much work. C) the same amount of work.
A monatomic ideal gas is compressed adiabatically to one-third of its initial volume. The resulting pressure will be
A) three times as large as the initial value. B) less than three times as large as the initial value. C) more than three times as large as the initial value. D) equal to the initial value. E) impossible to predict on the basis of this data.
The average molecular translational kinetic energy of a molecule in an ideal gas is
A.
kBT.B.
RT.C.
kBT.D.
RT.E.
kBT, where n = number of internal degrees of freedom.