Essential University Physics: Volume 1 (4th Edition) Clone

Published by Pearson
ISBN 10: 0-134-98855-8
ISBN 13: 978-0-13498-855-9

Chapter 7 - Section 7.6 - Potential-Energy Curves - Got It? - Page 128: 7.6

Answer

1) B 2) E 3) C 4) A or D 5) B or E

Work Step by Step

1) The force is the greatest at the steepest point in the curve, which is B. 2) If it has energy $E_1$, the electron cannot pass point E, for it cannot go above the horizontal line through $E_1$ 3) If it has energy $E_2$, the electron cannot pass point C, for it cannot go above the horizontal line through $E_2$ 4) Force is 0 where the slope is horizontal, which occurs at points A and D. 5) Points B and E are the points where the slope is positive, meaning that the the force is pointing left.
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