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Chapter 16: Q16P (page 473)
The speed of a transverse wave on a string is170m/swhen the string tension is 120N. To what value must the tension be changed to raise the wave speed to180m/s?
The value of change in tension to raise the velocity to 180 m/s in wave speed is 135 N
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A string along which waves can travel is2.70 mlong and has a mass of 260 g. The tension in the string is 36.0 N. What must be the frequency of traveling waves of amplitude 7.70 mmfor the average power to be 85.0 W?
Use the wave equation to find the speed of a wave given in terms of the general function:
localid="1660990709658" .
What phase difference between two identical traveling waves, moving in the same direction along a stretched string, results in the combined wave having an amplitude1.50 times that of the common amplitude of the two combining waves? (a)Express your answer in degrees, (b) Express your answer in radians, and (c) Express your answer in wavelengths.
The amplitudes and phase differences for four pairs of waves of equal wavelengths are (a) 2 mm, 6 mm, and , (b) 3 mm, 5 mm, and (c) 7 mm, 9 mm, and (d) 2 mm, 2 mm, and 0 rad. Each pair travels in the same direction along the same string. Without written calculation, rank the four pairs according to the amplitude of their resultant wave, greatest first.
(Hint:Construct phasor diagrams.)
A 120 mlength of string is stretched between fixed supports. What are the (a) longest, (b) second longest, and (c) third longest wavelength for waves traveling on the string if standing waves are to be set up? (d)Sketch those standing waves.
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