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Physics problems: waves

Part 1

 

Problem 1.

A saxophone is playing a steady note of frequency 266 Hz. The temperature in the room is 25 C. Suppose that at some instant the varying pressure at your eardrum is at a maximum. How far away in meters is the next pressure maximum?

Solution

 

Problem 2.

(Inquiry into Physics-5th ed.,Ostdiek,Bord) The quartz crystal used in an electric watch vibrates with frequency 32,768 Hz. What is the period of the crystals motion?

Solution

 

Problem 3.

A sound wave traveling at 350 m/s has a frequency of 500 Hz. What is its wavelength?

Solution

 

Problem 4.

Estimate how far away a cicada can be heard if the lowest possible audible intensity of a sound it produces is and the power of the cicada's sound source is .

Solution

 

Problem 5.

Light of wavelength 497.0 nm appers to have a wavelength of 500.2 nm when it reaches eart from a distance star. find the velocity of the star if the speed of light is 300000000 m/s.

Solution

 

 

 

 

 

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