Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
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Chapter 2, Problem 28P
(a)
To determine
Difference between a charged and an uncharged battery.
(b)
To determine
The total fraction of the obtained mass difference.
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An electron is accelerated in an electric field of 1.90 106 V/m.
(a) What is the work done on the electron over 0.590 m?(b) How far must the electron travel for there to be 50.0 GeV of work? (These numbers are similar to the linear accelerators that can be found in many universities.) (km)
A proton moves from a location where V- 86 V to a spot where V= -43 V.
(a) What is the change in the proton's kinetic energy?
(b) If we replace the proton with an electron, what is the change in kinetic energy?
Calculate the speed of an electron (in m/s) after it accelerates from rest through a potential difference of 140 V.
7.02e25
m/s
The speed of the electron v can be found using the kinetic energy equation, K = 1/2(mv^2).
The change in kinetic energy is equal to the work done on the electron, K = W = -U = -qV.
Using those two equations, solve for the speed v in terms of the potential V and constants.
Remember that the mass of an electron is 9.1e-31 kg and its charge is 1.6e-19 C.
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Chapter 2 Solutions
Modern Physics
Ch. 2 - A particle is moving at a speed of less than c/2....Ch. 2 - Give a physical argument showing that it is...Ch. 2 - Prob. 3QCh. 2 - Prob. 4QCh. 2 - Prob. 5QCh. 2 - Prob. 6QCh. 2 - Prob. 8QCh. 2 - Prob. 9QCh. 2 - Calculate the momentum of a proton moving with a...Ch. 2 - Prob. 2P
Ch. 2 - Consider the relativistic form of Newtons second...Ch. 2 - A charged particle moves along a straight line in...Ch. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - A proton moves at a speed of 0.95c. Calculate its...Ch. 2 - An electron has a kinetic energy 5 times greater...Ch. 2 - Find the speed of a particle whose total energy is...Ch. 2 - A proton in a high-energy accelerator is given a...Ch. 2 - An electron has a speed of 0.75c. Find the speed...Ch. 2 - Protons in an accelerator at the Fermi National...Ch. 2 - How long will the Sun shine, Nellie? The Sun...Ch. 2 - Electrons in projection television sets are...Ch. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - An electron having kinetic energy K = 1.000 MeV...Ch. 2 - The K0 meson is an uncharged member of the...Ch. 2 - An unstable particle having a mass of 3.34 1027...Ch. 2 - As measured by observers in a reference frame S, a...Ch. 2 - An object having mass of 900 kg and traveling at a...Ch. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - A particle of mass m moving along the x-axis with...Ch. 2 - Prob. 32PCh. 2 - Energy reaches the upper atmosphere of the Earth...
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