The speed of sound in the air inside a 0.640-m long gas column is 340 m/s. What is the fundamental resonant frequency of this air column if it is
(a) open at one end and closed at the other end?
(b) open at both ends?
(a) 133 Hz (b) 266 Hz
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Today, we know that Newton's "laws" are
A) often incorrect when applied to molecular-sized objects. B) incapable of explaining the motions of the planets. C) in agreement with all known experimental evidence. D) no longer useful as scientific principles. E) often incorrect when applied to liquids.
During the period of one day, the number of high tides at a given point is about
a. one. b. two. c. three. d. four. e. none of the above.
It is possible for a mixture of hot water (90 °C) and ice to have a final equilibrium temperature of 0 °C
What will be an ideal response?
A 5-kg object is moving to the right at 4 m/s and collides with another object moving to the left at 5 m/s. The objects collide and stick together. After the collision, the combined object:
a. is moving to the right. b. is moving to the left. c. is at rest. d. has less kinetic energy than the system had before the collision.