Answer to Question #261917 in Physics for Nitish Kumar

Question #261917

Calculate the wavelength of thermal neutrons at 20 degree Celsius





1
Expert's answer
2021-11-07T19:26:57-0500

Begin with the energy:


E=32kT, λ=h2mE=h3mkT=147 pm.E=\frac 32 kT,\\\space\\ \lambda=\frac h{\sqrt{2mE}}=\frac h{\sqrt{3mkT}}=147\text{ pm}.


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