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The following physics responses are provided by a student and, as such, should be considered in that context. While every effort is made for accuracy, absolute correctness cannot be fully guaranteed.
The speed of sound in air is a function of which one of the following? 1) wavelength 2) frequency 3) temperature 4) amplitude 5) none of the above.temperature
If I triple the mass per unit length of guitar string, its natural frequency changes by what factor?0.58
The density of a certain metal solid is 7.2*10^3 kg/m3, and its Young's modulus is 10*10^10 N/m2. What is the speed of sound in this metal?3 700 m/s
Two tuning forks sounding together result in a beat frequency of 3 Hz. If the frequency of one of the forks is 256 Hz, what is the frequency of the other?259 Hz or 253 Hz
A standing wave is set up in a 200-cm string fixed at both ends. The string vibrates in 5 distinct segments when driven by a 120-Hz source. What is the wavelength?80 cm
Doubling the tension in a guitar string will change its natural frequency by what factor?1.4
Tripling the distance between sound source and a listener will change the intensity, as detected by the listener, by what factor?1/9
By what amount does the sound intensity decrease when the distance to the source doubles? 1) 1.4 dB 2) 2.0 dB 3) 4.0 dB 4) 6.0 dB 5) 8.6 dB6.0 dB
A sound wave coming from a tuba has a wavelength of 1.50 m and travels to your ears at a speed of 345 m/s. What is the frequency of the sound you hear?230 Hz
A vibrating guitar string emits a tone simultaneously with one from a 500-Hz tuning fork. If a beat frequency of 5 Hz results, what is the frequency of vibration of the string? 1) 2 500 Hz 2) 505 Hz 3) 495 Hz 4) Either choice B or C is valid. 5) None of the aboveEither choice B or C is valid.
While standing at a crosswalk, you hear a frequency of 560 Hz from an approaching police car. After the police car passes, its frequency is 480 Hz. What is the speed of the police car? (speed of sound = 340 m/s)26.2 m/s
Consider a vibrating string that makes a sound wave that moves through the air. As the guitar string moves up and down, the air molecules that are a certain horizontal distance from the string will move: 1) up and down. 2) toward and away from the guitar string. 3) back and forth along the direction of the length of the string. 4) in circles around the guitar string. 5) none of the above.toward and away from the guitar string.
I stretch a rubber band and "plunk" it to make it vibrate in its fundamental frequency. I then stretch it to twice its length and make it vibrate in the fundamental frequency once again. The rubber band is made so that doubling its length doubles the tension and reduces the mass per unit length by a factor of 2. The new frequency will be related to the old by a factor of:1.0
What is the intensity of a sound with a measured intensity level of 84 dB? (I0 = 10^-12 W/m2)2.5*10^-4 W/m^2
Two loudspeakers are placed next to each other and driven by the same source at 500 Hz. A listener is positioned in front of the two speakers and on the line separating them, thus creating a constructive interference at the listener's ear. What minimum distance would one of the speakers be moved back away from the listener to produce destructive interference at the listener's ear? (The speed of sound = 340 m/s.)0.34 m
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