a resonance A sonometer wire 100cm long produces with a tuning fork when it's length is decreased by 10cm, 8 beats/sec are heaved. Find the frequency of funing fork.
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- A taut string having tension 263 N has a wave speed of 51 m/s when it is plucked. What should be its new tension of we want the wave speed to be 266 m/s. Write your answer in N.(3) A harmonica makes sounds when a reed inside of it vibrates back and forth. We can consider this to the same as a string with mass 16.5g that is fixed at both ends. The reed is experiencing 639N of tension. (a) This particular harmonica is in the key of D# and it can emit as a fundamental frequency f = 311.13H z. What is the length of the reed? (b) What is the n = (c) A person decides to produce the fundamental frequency on the harmonica in a room 20°C while rolling around in their favorite chair at 8.19m/s. They hear the echo of their playing off the wall that they are moving away from. What is the frequency of the echo heard by the harmonica player? (d) When an observer is 6.79m away from the harmonica player, the sound intensity level is 86.6dB. What is the sound intensity level of the music when the observer is 41.6m away from the harmonica player? 3 harmonic for this reed? at TA uniform 165 N bar issupported horizontally by two identicalwires A and B (Fig. ). Asmall 185 N cube of lead is placedthree-fourths of the way from Ato B. The wires are each 75.0 cmlong and have a mass of 5.50 g.If both of them are simultaneously plucked at the center, what is thefrequency of the beats that they will produce when vibrating in theirfundamental?