1. Three charges are arranged as shown. a. The magnitude of the electric field at point P due to one of the +Q charges is E. What is the magnitude of the net electric field at P? Write answer in terms of E and/or 0 only. 2.Three charges are on a line as shown. An electron (charge -e, mass m) is released from rest at point A. We want to determine how fast the electron is moving at point B. -Z W +Q O-. L 0 b. The electric potential at point P due to one of the +Q charges is V. What is the net voltage at point P? Take V = 0 at infinity. Write answer in terms of V, and/or 8 only. A +Q 0 L ‒‒‒‒‒‒ -P------ 2L-- W b. Use conservation of energy to determine the speed of the electron a point B. B 1 W +Z W a. A common mistake is to calculate the electric force on the electron at point A and then use Newton's 2nd law and constant acceleration kinematics to find the speed of the electron at point B. Why won't this work? -3Q -2Z
1. Three charges are arranged as shown. a. The magnitude of the electric field at point P due to one of the +Q charges is E. What is the magnitude of the net electric field at P? Write answer in terms of E and/or 0 only. 2.Three charges are on a line as shown. An electron (charge -e, mass m) is released from rest at point A. We want to determine how fast the electron is moving at point B. -Z W +Q O-. L 0 b. The electric potential at point P due to one of the +Q charges is V. What is the net voltage at point P? Take V = 0 at infinity. Write answer in terms of V, and/or 8 only. A +Q 0 L ‒‒‒‒‒‒ -P------ 2L-- W b. Use conservation of energy to determine the speed of the electron a point B. B 1 W +Z W a. A common mistake is to calculate the electric force on the electron at point A and then use Newton's 2nd law and constant acceleration kinematics to find the speed of the electron at point B. Why won't this work? -3Q -2Z
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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