### 1.37

Posted:

**Sun Oct 15, 2017 2:38 pm**Hi!

Can someone please explain 1.37 from the textbook HW problems. I know I need to use the De Broglie equation, but how do I find the mass of a proton/neutron? Is it just a value I should have memorized, or would it be given?

1.37) Protons and neutrons have nearly the same mass. How different are their wavelengths? Calculate the the wavelength of each particle when traveling at 2.75 x 10^5 m/s in a particle accelerator and report the difference as a percentage of the wavelength of a neutron.

Thanks so much!

Can someone please explain 1.37 from the textbook HW problems. I know I need to use the De Broglie equation, but how do I find the mass of a proton/neutron? Is it just a value I should have memorized, or would it be given?

1.37) Protons and neutrons have nearly the same mass. How different are their wavelengths? Calculate the the wavelength of each particle when traveling at 2.75 x 10^5 m/s in a particle accelerator and report the difference as a percentage of the wavelength of a neutron.

Thanks so much!