Physics Question and Problem 21.19 Part A Two loudspeakers emit sound waves alon

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Physics Question

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Problem 21.19 Part A Two loudspeakers emit sound waves along the x- axis. The sound has maximum intensity when the speakers are 22 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 59 cm What is the wavelength of the sound? Express your answer to two significant figures and include the appropriate units. alne Submit My Answers Give Up Part B If the distance between the speakers continues to increase, at what separation will the sound intensity again be a maximum? Express your answer with the appropriate units d= Value Units alne Submit My Answers Give Up

Explanation / Answer

given data

1. maximum intensity at = 22cm

The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation of 59 cm

What is the wavelength of the sound?

  Highest intensity = 22cm
Lowest intensity = 59cm

59-22 = 37 cm. But that's 37cm for half a wave so 37*2 = 74 cm = wavelength.

If the distance between the speakers continues to increase, at what separation will the sound intensity again be a maximum?

From 59cm to another point of high intensity = 59 + 37 = 96 cm

2.

given data

length=2m

speed = 6420m/s

fundamental frequency f=?

f = v/2L

f= 6420/(2*2)

f = 1605 Hz

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