College Physics:
College Physics:
11th Edition
ISBN: 9781305965515
Author: SERWAY, Raymond A.
Publisher: Brooks/Cole Pub Co
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Chapter 28, Problem 5P

(a)

To determine

The speed of the electron in an electrostatic medium where exists an attractive force between electron and proton.

(b)

To determine

The concept of Einstein’s relativity could considered in studying atom in the area of speed.

(c)

To determine

The de Broglie wavelength of the electron as it moves about the proton.

(d)

To determine

does the wavelength suggest that wave effects, such as diffraction and interference, must be considered in studying the atom.

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(a) Using the Bohr model, calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels. (b) Calculate the orbital period in each of these levels. (c) The average lifetime of the first excited level of a hydrogen atom is 1.0 * 10-8 s. In the Bohr model, how many orbits does an electron in the n = 2 level complete before returning to the ground level?
(a) Using the Bohr model, calculate the speed of the electron in a hydrogen atom in the n = 1, 2, and 3 levels. (b) Calculate the or- bital period in each of these levels. (c) The average lifetime of the first excited level of a hydrogen atom is 1.0 x 10-8 s. In the Bohr model, how many orbits does an electron in the n = 2 level complete before returning to the ground level?
Calculate the De-Broglie wavelength for, A biological virus of size d is 10 nm – 300 nm, mass m is 10 ^ -15 kg and average speed v = 1 mm/s. An atomic electron size of d is 2.8 fm, mass m is 9.1 x 10^-31 kg, and in orbital speed in first Bohr orbit is v= 2.6 x 10^6 m/s
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