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$\bullet$$\bullet$ Two point charges $q_{1}$ and $q_{2}$ are held4.00 $\mathrm{cm}$ apart. An electron released at apoint that is equidistant from bothcharges (see Figure 17.59 ) undergoes aninitial acceleration of $8.25 \times 10^{18} \mathrm{m} / \mathrm{s}^{2}$directly upward in the figure, parallel tothe line connecting $q_{1}$ and $q_{2} .$ Find themagnitude and sign of $q_{1}$ and $q_{2}$ .

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$6.14 \times 10^{-6} \mathrm{C}$$-6.14 \times 10^{-6} \mathrm{C}$

Physics 102 Electricity and Magnetism

Chapter 17

Electric Charge and Electric Field

Gauss's Law

Electric Potential

Rutgers, The State University of New Jersey

Hope College

University of Sheffield

University of Winnipeg

Lectures

13:02

In physics, potential energy is the energy possessed by a body or a system due to its position relative to others, stresses within itself, electric charge, and other factors. The unit for energy in the International System of Units (SI) is the joule (J). One joule is the energy expended (or work done) in applying a force of one newton through a distance of one metre (1 newton metre). The term potential energy was introduced by the 19th century Scottish engineer and physicist William Rankine, although it has links to Greek philosopher Aristotle's concepts of potentiality. Potential energy is associated with forces that act on a body in a way that the work done by these forces on the body depends only on the initial and final positions of the body, and not on the specific path between them. These forces, that are called potential forces, can be represented at every point in space by vectors expressed as gradients of a scalar function called potential. Potential energy is the energy of an object. It is the energy by virtue of a position relative to other objects. Potential energy is associated with restoring forces such as a spring or the force of gravity. The action of stretching the spring or lifting the mass is performed by a force that works against the force field of the potential. This work is stored in the field, which is said to be stored as potential energy.

18:38

In physics, electric flux is a measure of the quantity of electric charge passing through a surface. It is used in the study of electromagnetic radiation. The SI unit of electric flux is the weber (symbol: Wb). The electric flux through a surface is calculated by dividing the electric charge passing through the surface by the area of the surface, and multiplying by the permittivity of free space (the permittivity of vacuum is used in the case of a vacuum). The electric flux through a closed surface is zero, by Gauss's law.

09:18

Two point charges $q_{1}$ …

04:17

Two point charges $q_1$ an…

11:40

06:14

(II) Two point charges, $Q…

02:10

II) Two point charges, $Q_…

05:39

Suppose the charge $q_{2}$…

01:07

Two point particles with c…

05:18

Two point charges, $q_{1}=…

03:31

(II) Determine the directi…

05:48

Two particles having charg…

problem number 75. In this problem, it is given that there are go unknown charges and and electron is placed in such a position that it expedience is unmet Ex elation in the upward direction you do the force exacted by these two charges. This land measures 3.6 centimeters. The line connecting the two charges is off land for centimeters. This is a three centimeter. This is 3.6 centimeters. No, we have to find the magnitude and the sign of the no charges you won. And cute too. As we are given that the Net ax elation off electron is in the upward direction. So the net force on the electron should also be in the upward direction. This net force is the resultant off the force on the electron by the charge Cuban and Judge, You do get a net upward force. The charge by Kyu won should be in this direction. This is everyone and judge you do should exert are repulsive force in this direction as f too. So the charge Cuban and you do are up. Was it inside? These are making three tangle with the horizontal get net upward force the component are both forces. One cost Rita and I have to cost. Rita should be equal. So we get I have to cost Rita. Is it Quito? Have one course, Frieda. Well, this will give us that. Is it You do is equal to you. Won because all other quantities are same. For what? The forces. So both charges have same magnitude, but oppose it'd direction? No. The net upward force. Can we do tennis? Have one sign, Rita? Yes, I have to sign Rita. This net force is a call to the moss off the electron and the net acceleration off the electron does weaken. Right? Okay, You won e There is the charge off. Electron side Rita by distance, which is 01 zero 36 is square less gay. Youto e sent Rita. Bye. 0.36 You square. Is it quarto? Um A. Now we know that Cuban is equal. Took you to so we can write. Don't. Okay, you stain Rita upon 0.36 is square is equal to and a now substituting the values no into the value off Gollum's constant, which is nine into 10 to the power nine. Indu Sign Rita, which is zero point 02 upon zero point zero 36 into one upon 0.36 It's square is equal to mass off electron, which is 9.1 into 10 to the power minus 31 cages in tow. Absolution off electron, which is given us it won five into tend to devour 18. We that are second described upon you on solving this expression. We will get Q e Quito 6.1 into 10 to the power minus six Euler columns does que one is equal to 6.1 into 10 to the power minus six columns without a positive sign, your toe is equal to minus 6.1 in tow. 10 to the power minus six. Who loves.

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