36 Waves

36 Waves - An automobile horn sends out waves in air 2.2 ft...

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An automobile horn sends out waves in air 2.2 ft long. If the speed of sound is 1100ft/ sec, what is the frequency of the source?
Two strings on a musical instrument are required to emit different tones, the frequency of string a to be greater than that of string b. This condition might be secured by making: a) a longer than b b) a thicker than b c) the tension of be greater than that of a d) a shorter than b

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A sound wave in a 2m long tube of mercury has a frequency of 100,000Hz. The reflected waves combine with the initial waves to form standing waves with nodes 7.07mm apart. What is the speed of sound in mercury? a) 0.707x10 5 cm/s b) 1.41x10 6 cm/s c) 1.41x10 5 cm/s d) 3.3x10 4 cm/s
A stretched string 1m long vibrated with a fundamental frequency of 200Hz. The speed of a transverse wave on this string was a) 100m/s b) 200m/s c) 400m/s d) 800m/s e) 662 m/s

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A jet plane passes over your head in horizontal flight. When it is straight above you, the sound seems to come from a point behind the plane in a direction inclined 30°
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This document was uploaded on 04/15/2011.

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36 Waves - An automobile horn sends out waves in air 2.2 ft...

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