De Broglie wavelength of a tennis ball

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Homework Help Overview

The discussion revolves around the de Broglie wavelength of a moving tennis ball, specifically addressing a multiple choice question regarding its implications and properties. Participants are exploring the relationship between momentum, mass, and wave-particle duality in the context of classical and quantum physics.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the calculation of the de Broglie wavelength and its implications, questioning the momentum and mass of the tennis ball. There is an exploration of how these factors relate to the behavior of the tennis ball as a particle or wave.

Discussion Status

The discussion includes attempts to clarify the concept of de Broglie wavelength and its significance. Some participants provide information about the mass of a tennis ball and its relevance to the question posed, while others express uncertainty about the implications of the calculated wavelength.

Contextual Notes

Participants note the lack of specific information regarding the mass of the tennis ball in the context of the multiple choice question, which may influence the understanding of its wave properties.

Davidmb19
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This is a multiple choice question.
The de Broglie wavelength of a moving tennis ball is calculated as 1x10^-33. This means that the moving tennis ball
A)Diffracts through a narrow slit.
B)Does not behave as a particle
C)Does not display wave properties
D)Is traveling at the speed of light

The answer is C and I know this through the process of elimination however, I do not conceptually understand why it is. Can someone please explain?
 
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What's the momentum?
 
Wavelength= Plank's constant/Momentum
Therefore rearranging the equation
(6.63x10^-34)/(1x10^-33)=0.663
 
... and, the mass of a tennis ball?
 
lol We don't know the mass. This is a multiple choice but the mass of a tennis ball, in general, is about 58 grams.
 
With that mass is it anywhere near light speed?
 
Ahhhh I see! I didn't think of that. Thank you :).
 
Good --- that take care of things for you?
 
Yep. Thanks :D
 

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