An alpha particle (charge of 2e) is sent at high speed toward a gold nucleus (charge 79e). What is the electric force acting on the alpha particle when it is 2.0 x 10-14 m away from the gold nucleus? O 14 N 73 N O 21 N O 39 N O 91 N

An alpha particle (charge of 2e) is sent at high speed toward a gold nucleus (charge 79e). What is the electric force acting on the alpha particle when it is 2.0 x 10-14 m away from the gold nucleus? O 14 N 73 N O 21 N O 39 N O 91 N

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter16: Electrical Energy And Capacitance

Section: Chapter Questions

Problem 20P: A proton and an alpha particle (charge = 2e, mass = 6.64 1027 kg) are initially at rest, separated...

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A proton is located at the origin, and a second proton is located on the x-axis at x = 6.00 fm (1 fm = 10-15 m). (a) Calculate the electric potential energy associated with this configuration. (b) An alpha particle (charge = 2e, mass = 6.64 1027 kg) is now placed at (x, y) = (3.00, 3.00) fm. Calculate the electric potential energy associated with this configuration. (c) Starting with the three-particle system, find the change in electric potential energy if the alpha particle is allowed to escape to infinity while the two protons remain fixed in place. (Throughout, neglect any radiation effects.) (d) Use conservation of energy to calculate the speed of the alpha particle at infinity. (e) If the two protons are released from rest and the alpha panicle remains fixed, calculate the speed of the protons at infinity.
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Review. A particle with a charge of 60.0 nC is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm and outer radius 25.0 cm. The spherical shell carries charge with a uniform density of 1.33 C/m3. A proton moves in a circular orbit just outside the spherical shell. Calculate the speed of the proton.