## 6th Edition homework 1.37 wavelength of protons and neutrons

$c=\lambda v$

Louise Zhuang
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Joined: Fri Sep 28, 2018 12:28 am

### 6th Edition homework 1.37 wavelength of protons and neutrons

Protons and neutrons have nearly the same mass. How different are their wavelengths? Calculate the wavelength of each particle when traveling at 2.75 = 105 m/s in a particle accelerator and report the difference as a percentage of the wavelength of the neutron.

How do you do this without knowing proton's and neutron's mass? If they have nearly the same mass how could the wavelengths be different?

Chem_Mod
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### Re: 6th Edition homework 1.37 wavelength of protons and neutrons

You can find the proton and neutron mass in the back of the book. The wavelengths are different because of the differences in mass, even though they are small.

Brian Hom 2F
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Joined: Fri Sep 28, 2018 12:24 am

### Re: 6th Edition homework 1.37 wavelength of protons and neutrons

The wave lengths of a proton and a neutron are identical to 3 significant figures as the lengths are 1.44x10^-12m. To solve this problem, you should use De Broglie's wave equation.