1. A violin string of length 0.54 m and wave speed of 565 m/s along it. Calculate its fundamental frequency. a. 282.5 Hz b. 1046 Hz C. 1546 Hz d. 523 Hz 2. The speed of propagation of a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequency of this string? a. 25 Hz b. 200 Hz c. 100 Hz d. 50 Hz 3. A sound has an intensity of 5.0 x 10^-8 W/m^2. What is the intensity level of this sound? a. 4.7 dB b. 0.47 dB c. 50 dB d. 47 dB
1. A violin string of length 0.54 m and wave speed of 565 m/s along it. Calculate its fundamental frequency. a. 282.5 Hz b. 1046 Hz C. 1546 Hz d. 523 Hz 2. The speed of propagation of a transverse wave on a 2.0-m long string fixed at both ends is 200 m/s. Which one of the following is not a resonant frequency of this string? a. 25 Hz b. 200 Hz c. 100 Hz d. 50 Hz 3. A sound has an intensity of 5.0 x 10^-8 W/m^2. What is the intensity level of this sound? a. 4.7 dB b. 0.47 dB c. 50 dB d. 47 dB
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Transcribed Image Text:1. A violin string of length 0.54 m and wave speed of 565 m/s along it. Calculate its fundamental
frequency.
a. 282.5 Hz
b. 1046 Hz
c. 1546 Hz
d. 523 Hz
2. The speed of propagation of a transverse wave on a 2.0-m long string fixed at both ends is 200
m/s. Which one of the following is not a resonant frequency of this string?
a. 25 Hz
b. 200 Hz
c. 100 Hz
d. 50 Hz
3. A sound has an intensity of 5.0 x 10^-8 W/m^2. What is the intensity level of this sound?
a. 4.7 dB
b. 0.47 dB
c.
50 dB
d. 47 dB
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