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When a wave moves, what happens to the medium? 

(1) It moves up and down or back and forth, but it does not move forward with the wave.

(2) It moves forward with the wave.

(3) It moves only perpendicular to the energy of the wave.

(4) It moves only parallel to the energy of the wave.

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Ankit Lal
Ankit LalLv10
19 Sep 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

An oscillator creates periodic waves on a stretched string.

a) If the period of the oscillator doubles, what happens to the wavelength and wave speed?
1) The wavelength doubles but the wave speed remain unchanged.
2) The wavelength is halved but the wave speed is unchanged.
3) The wavelength is unchanged but the wave speed doubles.

b) If the amplitude of the oscillator doubles, what happens to the wavelength and wave speed?
1) Both wavelength and wave speed are unchanged.
2) The wavelength is unchanged but the wave speed doubles.
3) The wavelength doubles but the wave speed remain unchanged.

True or False

(I) Is each one of the following statements true or false for aphoton?

(a) It is a quantum particle, behaving in some experiments like aclassical particle and in some experiments like a classicalwave.TrueYour answer is correct.

(b) Its rest energy is zero. FalseYour answer is incorrect.

(c) Its rest energy is nonzero. TrueYour answer is incorrect.

(d) It carries energy in its motion. 4

(e) It carries momentum in its motion. 5

(f) Its motion is described by a wave function that has awavelength and satisfies a wave equation. 6

(g) For one-dimensional motion, the wave equation is asfollows:
(partial^2 E)/(partial x^2) = mu_0 epsilon_0 (partial^2 E)/(partialt^2)
where the wave function E is the electric field magnitude, with asimilar equation for B = E/c. 7

(h) For one-dimensional motion, the wave equation is asfollows:
-hbar^2/(2m)(d^2 Psi)/(dx^2) + U Psi = E Psi
where E is the constant energy. 8

(i) The intensity of the wave is proportional to the square of itswave function. 9

(j) The intensity of the wave is measured from the rate at whichthe quantum particles bombard a detector. 10



(II) Is each one of the statements true or false for anelectron?

(a) It is a quantum particle, behaving in some experiments like aclassical particle and in some experiments like a classical wave.11

(b) Its rest energy is zero. 12

(c) Its rest energy is nonzero. 13

(d) It carries energy in its motion. 14

(e) It carries momentum in its motion. 15

(f) Its motion is described by a wave function that has awavelength and satisfies a wave equation. 16

(g) For one-dimensional motion, the wave equation is asfollows:
(partial^2 E)/(partial x^2) = mu_0 epsilon_0 (partial^2 E)/(partialt^2)
where the wave function E is the electric field magnitude, with asimilar equation for B = E/c. 17

(h) For one-dimensional motion, the wave equation is asfollows:
-hbar^2/(2m)(d^2 Psi)/(dx^2) + U Psi = E Psi
where E is the constant energy. 18

(i) The intensity of the wave is proportional to the square of itswave function. 19

(j) The intensity of the wave is measured from the rate at whichthe quantum particles bombard a detector.

A transverse sinusoidal wave is generated at one end of a long,horizontal string by a bar that moves up and down through adistance of 2.00 cm. The motion is continuous and is repeatedregularly 110 times per second. The string has linear density 130g/m and is kept under a tension of 110.0 N.
(a) Find the maximum value of the transverse speed u.=691cm/s
(b) Find the maximum value of the transverse component of thetension.
(c) Show that the two maximum values calculated above occur at thesame phase values for the wave. (Do this on paper. Your instructormay ask you to turn in this work.) What is the transversedisplacement y of the string at these phases?
(d) What is the maximum rate of energy transfer along thestring?
(e) What is the transverse displacement y when this maximumtransfer occurs?
(f) What is the minimum rate of energy transfer along the string?(g) What is the transverse displacement y when this minimumtransfer occurs?

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