Use the worked example above to help you solve this problem. A proton is released from rest at x = -2.60 cm in a constant electric field with magnitude 1.51 x 103 N/C, pointing in the positive x-direction. (a) Calculate the change in potential energy when the proton reaches x = 5.35 cm. (b) An electron is now fired in the same direction from the same position. What is its change in electric potential energy if it reaches x = 12.60 cm? (c) If the direction of the electric field is reversed and an electron is released from rest at x = 4.00 cm, by how much has its electric potential energy changed when it reaches x = 7.50 cm?

Use the worked example above to help you solve this problem. A proton is released from rest at x = -2.60 cm in a constant electric field with magnitude 1.51 x 103 N/C, pointing in the positive x-direction. (a) Calculate the change in potential energy when the proton reaches x = 5.35 cm. (b) An electron is now fired in the same direction from the same position. What is its change in electric potential energy if it reaches x = 12.60 cm? (c) If the direction of the electric field is reversed and an electron is released from rest at x = 4.00 cm, by how much has its electric potential energy changed when it reaches x = 7.50 cm?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

Use the worked example above to help you solve this problem. A proton is released from rest at
x = -2.60 cm in a constant electric field with magnitude 1.51 x 10³ N/C, pointing in the positive
x-direction.
(a) Calculate the change in potential energy when the proton reaches x = 5.35 cm.
(b) An electron is now fired in the same direction from the same position. What is its change in
electric potential energy if it reaches x = 12.60 cm?
J
(c) If the direction of the electric field is reversed and an electron is released from rest at
X = 4.00 cm, by how much has its electric potential energy changed when it reaches x = 7.50 cm?
EXERCISE
Find the change in electric potential energy associated with the electron in part (b) as it goes on from
x = 0.126 to x = -0.018 m. (Note that the electron must turn around and go back at some point. The
location of the turning point is unimportant, because changes in potential energy depend only on the end
points of the path.)
ΔΡΕ =
J

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