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Two point charges are located on the x axis. the first is a charge +Q at x=-a. The second is an unknown charge located at x=+3a. The net electric field these charges produce at the origin has a magnitude of 2keQ/a2. What are the two possible values of the unknown charge? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153435
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$ 1.0 |
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Three point charges are fixed in place in a right triangle. What is the electric force on the +1.0 micro Coulombs charge due to the other two charges?
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Subject: Physics | Topic: Electricity and Magnetism | ID: 153436
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$ 2 |
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Electrostatics course
File: Electric Potential.pdf ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153437
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Consider three charges q1 = 7.0 µC, q2 = 0.9 µC, and q3 = -1.9 µC, arranged as shown below.
See Fig.22-103
(a) What is the electric field at a point 1.0 cm to the left of the middle charge?
(b) What is the magnitude of the force on a 1.7 µC charge placed at this point?
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Subject: Physics | Topic: Electricity and Magnetism | ID: 153438
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$ 1.5 |
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Consider three charges q1 = 4.9 nC, q2 = 7.5 nC, and q3 = -3.1 nC, arranged in a triangle as shown below.
See Fig 22-104
(a) What is the electric force acting on the charge at the origin?
(b) What is the net electric field at the position of the charge at the origin?
...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153439
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$ 1.0 |
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Electrostatics course
File Electric Fields.pdf ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153440
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$ 0 |
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Electrostatics course
File: Gauss's Law.pdf ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153441
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A thunderstorm has an electric field one night of 2.1 105 N/C.
What is the magnitude of the electric force on an electron in such a field? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153444
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An electron and a proton are each placed at rest in an external uniform electric field of magnitude 348 N/C.
Calculate the speed of each particle after 38 ns. ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153445
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$ 1.0 |
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Each of the protons in a particle beam has a kinetic energy of 4.44* 10^(-15) J.
What are the magnitude and direction of the electric field that will stop these protons in a distance of 1.49 m? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153446
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$ 1.0 |
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An object with a net charge of 38 µC is placed in a uniform electric field of 510 N/C, directed vertically.
What is the mass of the object if it floats in the electric field? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153447
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$ 1.0 |
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At what separation is the electrostatic force between q1 = +13.2 µC point charge and q2 = +29.1 µC point charge equal in magnitude to 2.92 N? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 153448
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$ 1.0 |
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A parallel plate capacitor is formed by two square conducting plates of area A separated by a distance d . The capacitor can be charged by connecting it to a battery.
After the switch has been closed for some time, the upper plate has a charge +Q and the lower plate has a charge -Q.
The magnitude of the force between the plates is given by F = Q^2/2A*epsilon_o
1. The switch is opened and an external force increases the separation of the capacitor plates by and amount x .
Calculate the work done by the external force and show that it is equal to the increase in the electrical energy stored in the capacitor.
2. Now consider the case where the external force increases the separation of the capacitor plates by an amount x while the switch remains closed.
a) Calculate the work done by the external force (through change in F = Q^2/2A*epsilon_o)
b) Calculate the change in the energy stored in the capacitor.
3. Explain any differences between the above two quantities ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 155292
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$ 3.0 |
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Scheme shows three equal charged particles in 3D-Plane in equilibrium.
Find charge q
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Subject: Physics | Topic: Electricity and Magnetism | ID: 155666
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$ 1.5 |
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What must be the distance between point charge q1 = 26.0 muC and point charge q2 = -47.0 muC for the electrostatic force between them to have a magnitude of 5.70 N? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 156910
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$ 1.0 |
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A point charge of +3.00 x 10^(-6) С is 12.0 cm distant from a second point charge of -1.50 x 10^(-6)С . Calculate the magnitude of the force on each charge. ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 156911
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$ 0 |
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Two equally charged particles, held 3.2 x 10^(-3) m apart, are released from rest. The initial acceleration of the first particle is observed to be 7.0 m/s^2 and that of the second to be 9.0 m/s^2. If the mass of the first particle is 6.3 x 10^(-7) kg, what are
(a) the mass of the second particle and
(b) the magnitude of the charge of each particle? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 156912
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$ 1.0 |
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Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with their diameters (Fig. (a)). The electrostatic force acting on sphere 2 due to sphere 1 is F. Suppose now that a third identical sphere 3, having an insulating handle and initially neutral, is touched first to sphere 1 (Fig.(b)), then to sphere 2 (Fig. (c)), and finally removed (Fig. (d)).
In terms of magnitude F, what is the magnitude of the electrostatic force F' that now acts on sphere 2? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 156914
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$ 1.0 |
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In Fig., what are the
(a) horizontal and
(b) vertical components
of the net electrostatic force on the charged particle in the lower left corner of the square if q = 1.0 x 10^(-7) С and a = 5.0 cm? ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 156916
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$ 1.0 |
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Point charges q1 and q2 lie on the x axis at points x =- a and x = +a, respectively,
(a) How must q1 and q2 be related for the net electrostatic force on point charge +Q, placed at x = +a/2, to be zero?
(b) Repeat (a) but with point charge +Q now placed at x = +3a/2. ...MORE
Subject: Physics | Topic: Electricity and Magnetism | ID: 156917
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$ 1.0 |
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