A note is being played on a string on a guitar. The string is then pushed to the side while still in contact with the same fret. What happens to the frequency of the note then played compared to the original note?
a. It is the same note since the same fret is being used.
b. It is at higher frequency than the original note.
c. It is at lower frequency than the original note.
d. It can be either higher of lower frequency depending on whether the original note was above or below middle C.
b
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The work done in the expansion from an initial to a final state
a. is the area under the curve of a PV diagram. b. depends only on the end point. c. is independent of the path. d. is the slope of a PV curve. e. equals P(VF ? Vi).
Most stars generate their energy by the thermonuclear fusion of ____________________ to form ____________________
Fill in the blank(s) with correct word
Galaxy A is 300 Mpc from Galaxy B. Hubble's Law says that V=H0 x D. About how fast is Galaxy A receding from the perspective of Galaxy B? Use a value of 75 km/s/Mpc for Hubble's constant.
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A very long string is tied to a rigid wall at one end while the other end is attached to a simple harmonic oscillator. Which of the following can be changed by changing the frequency of the oscillator?
a. The speed of the waves traveling along the string. b. The tension in the string. c. The wavelength of the waves on the string. d. All of the above. e. None of the above.