Question:

3. A string of length 2 m and mass 0.04 kg is fixed at both ends and is at a tension of 820 N. Which of the following is the fre

3. A string of length 2 m and mass 0.04 kg is fixed at both ends and is at a tension of 820 N.
Which of the following is the frequency of the third harmonic for a standing wave on this string?
a) 152 Hz
b) 159 Hz
c) 166 Hz
d) 169 Hz
e) 173 Hz
4. How far should you be from a 0.12 W source of sound to hear the sound at 96 dB? (Assume
the sound is emitted uniformly in all directions.)
a) 7.76 m
b) 6.65 m
c) 4.90 m
d) 2.45 m
e) 1.55 m

3. A string of length 2 m and mass 0.04 kg is fixed at both ends and is at a tension of 820 N. Which of the following is the frequency of the third harmonic for a standing wave on this string? a) 152 Hz b) 159 Hz c) 166 Hz d) 169 Hz e) 173 Hz 4. How far should you be from a 0.12 W source of sound to hear the sound at 96 dB? (Assume the sound is emitted uniformly in all directions.) a) 7.76 m b) 6.65 m c) 4.90 m d) 2.45 m e) 1.55 m

More Questions on Sound Waves

View all