Modern Physics, 3rd Edition
3rd Edition
ISBN: 9780534493394
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 7, Problem 2Q
To determine
The element for which probability of transmission is greatest.
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Chapter 7 Solutions
Modern Physics, 3rd Edition
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- At t = 0, a one-dimensional wave packet is constructed by the g(k) function shown in the image. a) Can we normalize this wave packet? If yes what is the G value? b) Find the probability current density.arrow_forwardLet 12.0-eV electrons approach a potential barrier of height 4.2 eV. (a) For what barrier thickness is there no refl ection? (b) For what barrier thickness is the refl ection a maximum?arrow_forwardSuppose that the electron in the Figure, having a total energy E of 5.1 eV, approaches a barrier of height Us=6.8 eV and thickness L= 750 pm. (a) What is the approximate probability that the electron will be transmitted through the barrier, to appear (and be detectable) on the other side of the barrier? Energy Us Electron Larrow_forward
- Consider the step potential function shown below. Assume that a flux of electrons has energy E and it is incident on a potential barrier of height VO with E > V0. The electrons are traveling in the x direction and they are originated from x = -o. i. (15 pts) Find the transmission coefficient between regions I and II. ii. (5 pts) Find the reflection coefficient between regions I and II iii. (10 pts) Assume the electron velocity is 4.6x105 cm/s, E = Your ClassV0. Find the probability that there is an electron at the distance "a = 4.6" A after the° barrier. iv. (5 pts) Determine the de Broglie wavelength in A?°arrow_forwardThis question is modern physics from the waves and particles chapter: An electron beam strikes a barrier with a single narrow slit, and the electron flux – number of electrons per unit time per unit area – detected at the very center of the resulting intensity pattern is F_1. Next, two more identical slits are opened equidistant on either side of the first and equally “illuminated” by the beam. What wil be the flux at the very center now? Does your answer imply that ore than three times as many electrons pass through three slits than through one? Why or why not?arrow_forwardp , For a step potential function at x = 0, the probability that a particle exists in the region x > 0 is (A) zero. (B) 1. (C) larger than zero. (D) larger than 1.arrow_forward
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