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De-Broglie relations to compute the wavelengths and frequencies

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1. Wave-particle duality
Use the de-Broglie relations to compute the wavelengths and frequencies associated with
(a) a photon with energy of 1keV
(b) a ball of mass 10g moving with speed 10m/s
(c) a neutron with a kinetic energy of 0.05eV.

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The expert uses De-Broglie relations to compute the wavelengths and frequencies.

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Please see the attached files.

De-Broglie relations for wavelength is:
(1.1)
Where p is the object momentum and h is Plank's constant.
The relativistic energy-momentum equation is:
(1.2)
For ...

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