HW22 - homework 22 RAHMAN, TARIQUE Due: Apr 25 2008, 3:00...

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1 Question 1, chap 16, sect 2. part 1 of 1 10 points Which requires a physical medium in which to travel? 1. sound 2. light 3. neither sound nor light 4. both sound and light Question 2, chap 16, sect 2. part 1 of 1 10 points A harmonic longitudinal wave propagating down a tube Flled with a compressible gas has the form s ( x, t ) = s m cos( kx - ωt ) . Its velocity can be obtained from 1. ω 2. ωk 3. k 4. ω/k 5. k/ω Question 3, chap 16, sect 3. part 1 of 1 10 points The Fgure shows two wave pulses that are approaching each other. P Q Which of the following best shows the shape of the resultant pulse when the centers of the pulses, points P and Q , coincide? 1. 2. 3. 4. 5. Question 4, chap 16, sect 3. part 1 of 1 10 points Two similar tuning forks produce sound waves of the same 7 . 1 mPa amplitude. One tuning fork y 1 has a frequency 1386 s - 1 and the other y 2 has a frequency of 1540 s - 1 . These two tuning forks produce interference. + A
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HW22 - homework 22 RAHMAN, TARIQUE Due: Apr 25 2008, 3:00...

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