Sears And Zemansky's University Physics With Modern Physics
Sears And Zemansky's University Physics With Modern Physics
13th Edition
ISBN: 9780321897961
Author: YOUNG, Hugh D./
Publisher: Pearson College Div
Question
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Chapter 39, Problem 1DQ
To determine

If the proton and electron have the same speed then which particle would have longer de Broglie wavelength.

Expert Solution & Answer
Check Mark

Answer to Problem 1DQ

The electron would have longer wavelength.

Explanation of Solution

The de Broglie wavelength of any particle or any object is the ratio Plank’s constant and momentum. Since the de Broglie wave length inversely proportional to the momentum of the particle or object, hence inversely proportional to the mass and velocity of the particle or object.

Here both electron and proton moves with same speed. Since according to the definition of de Broglie wavelength, the wavelength for a moving particle or object is inversely proportional to the mass and speed.

In this case speed of the both particle is same. Therefore the other quantity which depends on the wavelength is mass. The particle with lower mass would have shorter wavelength and vice versa. Thus, compared to proton electron has lower mass. Thus, electron exhibit longer de Broglie wavelength.

Conclusion:

Therefore, the electron would have longer wave length.

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Chapter 39 Solutions

Sears And Zemansky's University Physics With Modern Physics

Ch. 39 - Prob. 11DQCh. 39 - Prob. 12DQCh. 39 - Prob. 13DQCh. 39 - Prob. 14DQCh. 39 - Prob. 15DQCh. 39 - Prob. 16DQCh. 39 - Prob. 17DQCh. 39 - Prob. 18DQCh. 39 - Prob. 19DQCh. 39 - Prob. 20DQCh. 39 - Prob. 21DQCh. 39 - Prob. 22DQCh. 39 - Prob. 1ECh. 39 - Prob. 2ECh. 39 - Prob. 3ECh. 39 - Prob. 4ECh. 39 - Prob. 5ECh. 39 - Prob. 6ECh. 39 - Prob. 7ECh. 39 - Prob. 8ECh. 39 - Prob. 9ECh. 39 - Prob. 10ECh. 39 - Prob. 11ECh. 39 - Prob. 12ECh. 39 - Prob. 13ECh. 39 - Prob. 14ECh. 39 - Prob. 15ECh. 39 - Prob. 16ECh. 39 - Prob. 17ECh. 39 - Prob. 18ECh. 39 - Prob. 19ECh. 39 - Prob. 20ECh. 39 - Prob. 21ECh. 39 - Prob. 22ECh. 39 - Prob. 23ECh. 39 - Prob. 24ECh. 39 - Prob. 25ECh. 39 - Prob. 26ECh. 39 - Prob. 27ECh. 39 - Prob. 28ECh. 39 - Prob. 29ECh. 39 - Prob. 30ECh. 39 - Prob. 31ECh. 39 - Prob. 32ECh. 39 - Prob. 33ECh. 39 - Prob. 34ECh. 39 - Prob. 35ECh. 39 - Prob. 36ECh. 39 - Prob. 37ECh. 39 - Prob. 38ECh. 39 - Prob. 39ECh. 39 - Prob. 40ECh. 39 - Prob. 41ECh. 39 - Prob. 42ECh. 39 - Prob. 43ECh. 39 - Prob. 44ECh. 39 - Prob. 45ECh. 39 - Prob. 46ECh. 39 - Prob. 47ECh. 39 - Prob. 48ECh. 39 - Prob. 49ECh. 39 - Prob. 50ECh. 39 - Prob. 51ECh. 39 - Prob. 52ECh. 39 - Prob. 53ECh. 39 - Prob. 54ECh. 39 - Prob. 55ECh. 39 - Prob. 56ECh. 39 - Prob. 57ECh. 39 - Prob. 58ECh. 39 - Prob. 59ECh. 39 - Prob. 60ECh. 39 - Prob. 61ECh. 39 - Prob. 62ECh. 39 - Prob. 63ECh. 39 - Prob. 64ECh. 39 - Prob. 65ECh. 39 - Prob. 66ECh. 39 - Prob. 67ECh. 39 - Prob. 68ECh. 39 - Prob. 69ECh. 39 - Prob. 70ECh. 39 - Prob. 71ECh. 39 - Prob. 72ECh. 39 - Prob. 73ECh. 39 - Prob. 74ECh. 39 - Prob. 75ECh. 39 - Prob. 76ECh. 39 - Prob. 77ECh. 39 - Prob. 78ECh. 39 - Prob. 79ECh. 39 - Prob. 80ECh. 39 - Prob. 81ECh. 39 - Prob. 82ECh. 39 - Prob. 83ECh. 39 - Prob. 84ECh. 39 - Prob. 85ECh. 39 - Prob. 86ECh. 39 - Prob. 87ECh. 39 - Prob. 88ECh. 39 - Prob. 89ECh. 39 - Prob. 90ECh. 39 - Prob. 91ECh. 39 - Prob. 92ECh. 39 - Prob. 93ECh. 39 - Prob. 94ECh. 39 - Prob. 95ECh. 39 - Prob. 96E
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