Physics for Scientists and Engineers with Modern Physics
4th Edition
ISBN: 9780131495081
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
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Question
Chapter 43, Problem 25P
(a)
To determine
The proof that it is impossible for an isolated electron to
(b)
To determine
The defense in favor of the photon exchange diagram.
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(d)
volume
(e)
Show that the total number of photons per unit
at temperature Tis
kT
N' = 8π
hc.
where x = = E/KT.
Taking the value of the integral in (c) to be
about 2.404, determine how many photons per
cubic centimeter are there in a cavity filled with
radiation at T = 300 K.
(f)
radiation is emitted.
3 ∞
0
x²
1
ex.
-
1
dx
Find the energy at which the maximum
(b) When ultraviolet radiation of wavelength 58.4 nm from a helium lamp is directed on to a sample ofkrypton, electrons are ejected with a speed of 1.59 × 106 m s−1. Calculate the ionisation energy ofkrypton.
Q#1 (a)(i)A thermal neutron has a speed v at temperature T= 300 K and kinetic energy m-:
3 KT
Calculate its deBroglie wavelength. State whether a beam of these neutrons could be diffracted by a
crystal, and why?
(ii) Explain in detail two Heisenberg uncertainty principles. Apply Uncertainty principle to estimate the kinetic
energy (in MeV) of a nucleon bound within a nucleus of radius 10 15 m.
(b) A metal surface is illuminated by 8.5 x 10'* Hz light emits electrons whose maximum energy is 1.97 eV.
The same surface is illuminated by 12 x 104H2 light emits electrons whose maximum energy is 0.53 eV. Find
the Planck's constant and work function of the surface.
idth nf one dimensional hox in which a proton has an energy of 400,000 eV in its first excited
Chapter 43 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 43.1 - Prob. 1AECh. 43.2 - Prob. 1CECh. 43.9 - Prob. 1DECh. 43.9 - Prob. 1EECh. 43 - Prob. 1QCh. 43 - If a proton is moving at very high speed, so that...Ch. 43 - Prob. 3QCh. 43 - Prob. 4QCh. 43 - Prob. 5QCh. 43 - Prob. 6Q
Ch. 43 - Prob. 7QCh. 43 - Prob. 8QCh. 43 - Prob. 9QCh. 43 - Prob. 10QCh. 43 - Prob. 11QCh. 43 - Prob. 12QCh. 43 - Prob. 13QCh. 43 - Prob. 14QCh. 43 - Prob. 15QCh. 43 - Prob. 16QCh. 43 - Prob. 17QCh. 43 - Prob. 18QCh. 43 - Prob. 19QCh. 43 - Prob. 20QCh. 43 - Prob. 1PCh. 43 - Prob. 2PCh. 43 - Prob. 3PCh. 43 - Prob. 4PCh. 43 - Prob. 5PCh. 43 - Prob. 6PCh. 43 - Prob. 7PCh. 43 - Prob. 8PCh. 43 - Prob. 9PCh. 43 - Prob. 10PCh. 43 - Prob. 11PCh. 43 - Prob. 12PCh. 43 - Prob. 13PCh. 43 - Prob. 14PCh. 43 - Prob. 15PCh. 43 - Prob. 16PCh. 43 - Prob. 17PCh. 43 - Prob. 18PCh. 43 - Prob. 19PCh. 43 - Prob. 20PCh. 43 - Prob. 21PCh. 43 - Prob. 22PCh. 43 - Prob. 23PCh. 43 - Prob. 24PCh. 43 - Prob. 25PCh. 43 - Prob. 26PCh. 43 - Prob. 27PCh. 43 - Prob. 28PCh. 43 - Prob. 29PCh. 43 - Prob. 30PCh. 43 - Prob. 31PCh. 43 - Prob. 32PCh. 43 - Prob. 33PCh. 43 - Prob. 34PCh. 43 - Prob. 35PCh. 43 - Prob. 36PCh. 43 - Prob. 37PCh. 43 - Prob. 38PCh. 43 - Prob. 39PCh. 43 - Prob. 40PCh. 43 - Prob. 41PCh. 43 - Prob. 42PCh. 43 - Prob. 43PCh. 43 - Prob. 44PCh. 43 - Prob. 45PCh. 43 - Prob. 46GPCh. 43 - Prob. 47GPCh. 43 - Prob. 48GPCh. 43 - Prob. 49GPCh. 43 - Prob. 50GPCh. 43 - Prob. 51GPCh. 43 - Prob. 52GPCh. 43 - Prob. 53GPCh. 43 - Prob. 54GPCh. 43 - Prob. 55GPCh. 43 - Prob. 56GPCh. 43 - Prob. 57GPCh. 43 - Prob. 58GPCh. 43 - Prob. 59GPCh. 43 - Prob. 60GPCh. 43 - Prob. 61GPCh. 43 - Prob. 62GPCh. 43 - Prob. 63GPCh. 43 - Prob. 64GPCh. 43 - What fraction of the speed of light c is the speed...Ch. 43 - Prob. 66GPCh. 43 - Prob. 67GP
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- (II) What would be the wavelengths of the two photons produced when an electron and a positron, each with 420 keV of kinetic energy, annihilate head on?arrow_forward(II) What is the minimum photon energy needed to produce a u*u pair? The mass of each u (muon) is 207 times the mass of an electron. What is the wavelength of such a photon?arrow_forwardDiscuss the similarities and differences between the photon and the Z0 in terms of particle properties, including forces felt.arrow_forward
- (ii) Consider the two-level system with E1 = -13.6 eV and E2 = -3.4 eV. Assume A21 x 6 x 108 s-1. N1 and N2 are the populations of level E1 and E2, respectively and A21 is the Einstein coefficient of spontaneous emission. %3D (a) What is the frequency of light emitted due to transitions from E2 and E1? (b) What is the population ratio N2/N1 at T = 300 K?arrow_forward1arrow_forwardIn an intense electron bombardment of the hydrogen atom, signifi cant electromagnetic radiation is produced in all directions upon decay. Which emission line would you expect to be most intense? Why?arrow_forward
- ) Calculate the wavelength of the most energetic X-rays produced by tube operating at pd of 1 X 106V, h = 6.6 × 10-³4J, e = 1.6 x 10 1⁹C, c = 3 × 10⁰ ms¯¯arrow_forward6arrow_forward(6) Suppose an atom of iron at rest emits an X-ray photon of energy 64 keV. Calculate the recoil momentum and kinetic energy for the atom. (You should look up mass for iron, and think about whether you need to use the relativistic kinetic energy for the atom or if the classical expression is good enough.)arrow_forward
- true or false: The maximum energy of the ejected electrons varies linearly with the frequency of the incoming photons.arrow_forwardIf the mass of the electron neutrino is 2.2 eV/c2, what is the lowest temperature at which it could be formed from thermal interactions? What if its mass is 10-4 eV?arrow_forward(b)Calculate the energy and momentum of a photon of a laser beam of wavelength 6328 A0(c)What is population inversion? Explain why laser action cannot occur without populationinversion between atomic levels?arrow_forward
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