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  3. 1. (a) use the bohr model to find the radius and e

1. (a) Use the Bohr model to find the radius and energy of the first excited...

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Physics

1. (a) Use the Bohr model to find the radius and energy of thefirst excited state (n=2) of doubly ionized lithium.

(b)The long and short wavelength limits of a series of energytransitions in the hydrogen atom correspond to the transitions???????? = ∞ → ?????? ???????? = ?????? + 1 → ?????? Calculate thelong and short wavelength limits of the Balmer series (?????? =2)

2. (a) What is the kinetic energy of an electron whose deBroglie wavelength is equal to that of a 10 keV photon?

(b)A speck of dust of mass 0.100 ?? falls through the air with aspeed of 1.00 ??/?. What is the de Broglie wavelength of the speckof dust? Is this easy to observe?

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