If a guitar string has a fundamental frequency of 250 Hz, what is the frequency of its third harmonic?
a. 250 Hz
c. 1000 Hz
b. 750 Hz
d. 1500 Hz
B
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60. mi/h is approximately
A) 20. m/s. B) 120. m/s. C) 30. m/s. D) 60. m/s. E) 30. km/h.
Sound interference with a pair of radio loudspeakers can be nicely demonstrated when the
A) radio signal is monaural for each. B) input and output of the speakers are reversed. C) speakers are brought face to face. D) all of the above E) none of the above
The pollutant that affects the oxygen-carrying capability of the blood is
a. CO. b. SOx. c. CO2. d. NOx
A particle is moving at constant velocity. Its position at t = 1.0 s is 3.0 m and its position at t = 4.0 s is 15.0 m. What is the slope of the position-time graph for this particle?
a. 0, since this is a constant velocity situation. b. 4.0 m/s c. 4.0 m/s2 d. 9.0 m/s e. 12 m/s2