Introduction To Health Physics
Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 2, Problem 2.17P

An electron starts at rest on the negative plate of a parallel plate capacitor and is accelerated by a potential of 1000 volts across a 1-cm gap.
(a) With what velocity does the electron strike the positive plate?
(b) How long does it take the electron to travel the 1-cm distance?

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Use the exact values you enter in previous answer(s) to make later calculation(s). The electrons in a CRT are accelerated through a potential difference of 32 kV. (a) Do the electrons move from a region of high potential to a region of low potential, or vice versa? O from high potential to low potential O from low potential to high potential (b) What is the change in kinetic energy of one of the electrons? (c) If the initial speed is very small, what is the final speed of an electron? m/s
(a) What is the absolute potential at each of the following distances from a charge of 2.0 µC: r = 10 cm and r = 50 cm? (b) How much work is required to carry a 0.05 µC %3D charge from the point at r = 50 cm to that at r = 10 cm? (c) Suppose that a proton is released at r= 10 cm. How fast will it be moving as it passes a point at r = 50 cm?
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