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1) A laboratory oven that contains oxygen molecules O 2 and fluorine molecules F 2 is...

1) A laboratory oven that contains oxygen molecules O 2 and fluorine molecules F 2 is maintained at a constant temperature. Each fluorine molecule is 1.13 times as massive as an oxygen molecule. Find the ratio of the de Broglie wavelength of the oxygen molecule to that of the fluorine molecule, λ O 2 / λ F 2 , assuming that each molecule has kinetic energy 3 2 k T .

2) A photon of wavelength 7.33 pm scatters at an angle of 122∘ from an initially stationary, unbound electron. What is the de Broglie wavelength of the electron after the photon has been scattered? in pm.

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