Posted by **Rita** on Tuesday, October 21, 2008 at 10:34pm.

Neutron diffraction is used in determining the structures of molecules.

(a) Calculate the de Broglie wavelength of a neutron moving at 9.00% of the speed of light.

__ m

(b) Calculate the velocity of a neutron with a wavelength of 65 pm (1 pm = 10-12 m).

__m/s

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