The intensity of a sound wave is a measure of:
1.energy/area
2.force/time
3.momentum change/time
4.power/time
5.pressure difference/time
6.None of the above.
[Ques. 2] The energy that flows in a sound wave is:
1.kinetic energy only.
2.potential energy only.
3.both kinetic and potential energy.
4.heat energy.
5.thermal energy.
6.all of the above.
[Ques. 3] The use of the term sound waves in air is meant to describe:
1.the
position of air molecules.
2.the
velocity of air molecules.
3.the
pressure variations in air.
4.the
displacement of air molecules.
5.the
flow of energy through the air.
[Ques. 4] Two sound waves can interfere:
1.only when traveling in the same direction.
2.only when the frequencies are the same.
3.only when both are sinusoidal.
4.only when the phase difference is constant.
5.None of the above.
[Ques. 5] The phenomenon of interference is the result of:
1.conservation of energy
2.superposition
3.the Fourier theorem
4.conservation of mass
5.all of the above
[Ques. 6] Three systems are constructed from identical springs and masses as shown.
Which statement is true regarding the frequencies of these systems?
1.1 > 2 > 3
2.1 > 2 < 3
3.1 < 2 = 3
4.1 < 2 < 3
5.1 = 2 < 3
6.1 = 2 = 3
7.None of the above.
8.Cannot be determined.
[Ques. 7] Two identical springs are attached to two identical masses. Both are resting on a frictionless horizontal surface. One of the springs is displaced a distance d from its equilibrium position, while the other is displaced a distance 2d.
If both masses are released at the same instant,
which of the springs, A or B, returns to its
unstretched length first?
1.Spring A.
2.Spring B.
3.It's a tie.
4.Not enough information.
[Ques. 8] One mole of o gas is confined to volume V/2 by a thin membrane with another mole of o gas on the other side. Both gases are at the same temperature.
[Ques. 9] One mole of o gas is confined to volume V/2 by a thin membrane with one mole of x gas on the other side. Both gases are at the same temperature.
[Ques. 10]
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