Clickers2

Clickers2 - A. The frequency increases B. The frequency...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
1. For a transverse wave on a string is the wave speed the same as the speed of any particle of the string? A. Yes, the wave speed is the same as the speed of the particles B. No, the wave speed is different from the speed of the particles
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Answer B. The wave speed is different from its particles, the wave propagates at a constant speed along some direction, while particles oscillate in perpendicular direction.
Background image of page 2
2. The four strings on a violin have different thicknesses but all are under approximately the same tension. Do waves travel faster on the thick or the thin strings? A. Waves travel faster on the thick strings B. Waves travel faster on the thin strings C. Waves have the same speed on all strings
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Answer B: The lighter the string, the faster the speed, since v=(T/m) 1/2
Background image of page 4
3. If you stretch a rubber band and pluck it, you hear a (somewhat) musical tone. How does the frequency of this tone change as you stretch the rubber band further?
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
Background image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: A. The frequency increases B. The frequency decreases C. The frequency does not change. Answer A: The frequency will increase with tension because v=(T/m) 1/2 , and f=v/l 4. A musical interval of an octave corresponds to a factor of 2 in frequency. By what factor must the tension in a guitar string be increased to raise its pitch one octave. A. By a factor of 2 B. By a factor of 4 C. By a factor of 8 Answer B: because frequency is proportional to square root of tension, raising it by a factor of 4 will raise the frequency by a factor of 2., 5. Which of the following represents a wave function A. y(x,t) =cos( vx-t ) B. y(x,t) =log( x-vt ) C. y(x,t) =exp(a x+bt ) Answer B. Only this function has correct coordinate-time dependence f(x-vt) 6. Two pulses travel to each other as shown. What is the resulting pulse after one second? A B C 1 m/s 1 m/s 1m 1m 1m...
View Full Document

This note was uploaded on 01/10/2010 for the course PHY na taught by Professor Richardscalettar during the Fall '09 term at UC Davis.

Page1 / 11

Clickers2 - A. The frequency increases B. The frequency...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online