The pitch of a musical sound is most related to
A) wavelength.
B) frequency.
C) speed.
D) amplitude.
E) all of the above
Answer: B
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A gas-filled vertical cylinder, closed at the bottom end, is fitted at the top with a piston that can move freely. The mass of the piston is 10.0 kg, and the initial height of the piston above the bottom of the cylinder is 25 cm
A mass of 8.0 kg is placed on the piston. What is the resulting height of the piston, assuming that the temperature of the ideal gas is kept constant? A) 12 cm B) 13 cm C) 14 cm D) 15 cm E) 16 cm
The water flowing over Niagara Falls drops a distance of 50 m. If all the gravitational potential energy is converted to thermal energy, by what temperature does the water rise? The specific heat of water is 4186 J/kg ? K
A) 0.10 C° B) 0.12 C° C) 0.37 C° D) 0.42 C°
An object of weight W is in freefall close to the surface of Earth. The magnitude of the force that the object exerts on Earth is
A) greater than W. B) less than W. C) equal to W. D) zero. E) cannot be determined without knowing the relative masses of the object and the earth.
Describe the fate of planet Earth if the Sun were to collapse to a black hole
What will be an ideal response?