Distinguish between longitudinal and transverse waves
A longitudinal wave is a wave in which the particle displacement is in the same
direction as the wave motion. A transverse wave is a wave in which the particle
displacement is perpendicular to the wave motion.
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A 50.0 cm long organ pipe is filled with air at 10.0
and is open at both ends. The velocity of sound in air at 0.00 
is 331 m/s. Another 50.0 cm long organ pipe is filled with air at 15.0
and is open at both ends. What is the beat frequency between the fundamental modes of the two organ pipes?
A. 2.96 Hz B. 2.45 Hz C. 2.10 Hz D. 1.94 Hz E. 1.77 Hz
Acceleration due to gravity on the Moon is less than on Earth, and the Moon is smaller than Earth. This means that compared to an Earth satellite, a satellite in close orbit about the Moon would travel
A) slower. B) faster. C) the same. D) need more information
What spectral type of star that is still around formed most recently?
A) O B) A C) F D) K E) M
An object floats with half its volume beneath the surface of the water. The weight (force that Earth exerts in it) of the displaced water is 2000 N
What is the weight (force that Earth exerts on it) of the object? The density of water is 1000 kg/m3. A) 1000 N B) 2000 N C) 4000 N D) It cannot be determined because we do not know the volume of the object.