HW T0 Begin Date: W1S 12:05:00 AMDue Date: 83/2018 11:59.00 PM End Date:8/3/2018

Question

HW T0 Begin Date: W1S 12:05:00 AMDue Date: 83/2018 11:59.00 PM End Date:8/3/2018 11:59.00 PM (5%) Problem 12. A student attaches a f= 3.5 kHz oscillator to one end of a metal rail of length L = 18 m. The student turns on the oscillator and uses a pezoelectre gauge at the other end to measure that the resulting sound wave takes , of the rail. 0004/ s to travel the length ? 25% Part (a) Input an expression for the period of the waves in the rail, in terms of the given quantities. Grade Semm Antempes nemain detailed view give up lliets.0% non per hint Hints remaining ? 25% PaMb) what is the period, in seconds? .25% Part (c) what is the speed of the wave in the rail. in meters per second What is the wave length of the wave within the nil,in menin ? 25% Part (d) 5 6 8 9 command ·ootion

Explanation / Answer

A) Time period, T = 1/f

B) Time, T = 1/3500 = 2.86 x 10^-4 sec

C) Speed, v = L/t = 18/0.0041 = 4390.24 m/s

D) Wavelength, v/f = 4390.24/3500 = 1.25 m

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