Shown below is a configuration of charges that has been formed into a right triangle. We shall consider the process of the work required to assemble this collection of charges in the manner shown. To do so, we shall start with empty space and then add into that space one charge at a time until we have completely assembled the triangle of three charges. The legs of the right triangle have dimensions dx = 6.8e-02 meters and dy = 1.38e-02 meters. dy 92 9₁ The charges are as follows: 91-7.64e-06 Coulombs. • 92 = 2.21e-06 Coulombs. • 93= -5.2e-06 Coulombs. dx Determine the work required to place only q₁ into the position shown: Determine the work required to ADD 92 into the picture: Determine the work required to ADD q3 into the picture: Determine the total work required to complete all the above steps: Joules Joules 93 Joules Joules

Shown below is a configuration of charges that has been formed into a right triangle. We shall consider the process of the work required to assemble this collection of charges in the manner shown. To do so, we shall start with empty space and then add into that space one charge at a time until we have completely assembled the triangle of three charges. The legs of the right triangle have dimensions dx = 6.8e-02 meters and dy = 1.38e-02 meters. dy 92 9₁ The charges are as follows: 91-7.64e-06 Coulombs. • 92 = 2.21e-06 Coulombs. • 93= -5.2e-06 Coulombs. dx Determine the work required to place only q₁ into the position shown: Determine the work required to ADD 92 into the picture: Determine the work required to ADD q3 into the picture: Determine the total work required to complete all the above steps: Joules Joules 93 Joules Joules

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter26: Electric Potential

Section: Chapter Questions

Problem 72PQ: Problems 72, 73, and 74 are grouped. 72. A Figure P26.72 shows a source consisting of two identical...

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(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the negative charge has the very large value 1.00 mC. How many electrons are added for every 109 electrons already present?
A thin conducing plate 2.0 m on a side is given a total charge of 10.0C . (a) What is the electric field 1.0 cm above the plate? (b) What is the force on an electron at this point? (c) Repeat these calculations for a point 2.0 cm above the plate. (d) When the electron moves from 1.0 to 2.0 cm above the plate, how much work is done on it by the electric field?
Problems 72, 73, and 74 are grouped. 72. A Figure P26.72 shows a source consisting of two identical parallel disks of radius R. The x axis runs through the center of each disk. Each disk carries an excess charge uniformly distributed on its surface. The disk on the left has a total positive charge Q, and the disk on the right has a total negative charge Q. The distance between the disks is 3R, and point A is 2R from the positively charged disk. Find an expression for the electric potential at point A between the disks on the x axis. Approximate any square roots to three significant figures. FIGURE P26.72 Problems 72, 73, and 74.
Shown below is a configuration of charges that has been formed into a right triangle. We shall consider the process of the work required to assemble this collection of charges in the manner shown. To do so, we shall start with empty space and then add into that space one charge at a time until we have completely assembled the triangle of three charges. The legs of the right triangle have dimensions dx = 6.91e-02 meters and dy = 2.25e-02 meters. dx dy 92 91 The charges are as follows: .q₁-8.14e-06 Coulombs. • 92 = 2.24e-06 Coulombs. • 93 = -6.72e-06 Coulombs. Determine the work required to place only q1 into the position shown: Determine the work required to ADD 92 into the picture: Determine the work required to ADD 93 into the picture: [ Determine the total work required to complete all the above steps: 93 Joules Joules Joules Joules NOTE: Some of the works are positive. Some of the works are negative. Keep LOTS of digits if you want to get the sum correct to the required precision.
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Two point charges q1 = 2.2nC and q2 = −1.5nC are 13 cm apart. Point A is midway between the charges and point B is 12 cm from q1 and 5 cm from q2. Calculate the work done by the electric field on a charge of q3 = +3.6nC that moves from A to B. Express your answer in uJ.