MODERN PHYSICS (LOOSELEAF)
4th Edition
ISBN: 9781119495550
Author: Krane
Publisher: WILEY
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Question
Chapter 6, Problem 12P
To determine
The assumptions made in deriving Bohr's theory.
The assumption results in neglecting small quantities.
The assumption that violates the basic principles of relativity or quantum physics.
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Check out a sample textbook solutionStudents have asked these similar questions
Given that 0.750 mol of a particular atom all release an identical photon, resulting in a
total energy change of -176.0 kJ. Answer the following: (Hint: n does not equal 1 here)
a. What is the wavelength of the photons released?
b. What is the frequency of these photons?
c. What region of the electromagnetic spectrum is this emitted photon in?
I am struggling with getting this question done and need some help solving it, explain and make sure the answer is 100% correct.
When a fast electron (i.e., one moving at a relativistic speed) passes by a heavy atom, it interacts with the atom's electric field. As a result, the electron's kinetic energy is reduced; the electron slows down. In the meantime, a photon of light is emitted. The kinetic energy lost by the electron equals the energy E� of a photon of radiated light:
Eγ=K−K′��=�−�′,
where K� and K′�′ are the kinetic energies of the electron before and after radiation, respectively.
This kind of radiation is called bremsstrahlung radiation, which in German means "braking radiation" or "deceleration radiation." The highest energy of a radiated photon corresponds to the moment when the electron is completely stopped.
Part A.
Given an electron beam whose electrons have kinetic energy of 4.00 keVkeV , what is the minimum wavelength λmin�min of light radiated by such beam…
Be sure to answer all parts.
Consider the following energy levels of a hypothetical atom:
E4-2.51 × 10-19 J
E3-5.01 10-19 J
E2 -1.25 x 10-18 J
E₁-1.85 × 10-18 J
(a) What is the wavelength of the photon needed to excite an electron from E₁ to E4?
x 10
(b) What is the energy (in joules) a photon must have in order to excite an electron from E₂ to E3?
x 10
m
x 10
J
(c) When an electron drops from the E3 level to the E₁ level, the atom is said to undergo emission.
Calculate the wavelength of the photon emitted in this process.
m
Chapter 6 Solutions
MODERN PHYSICS (LOOSELEAF)
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