Mastering Physics Solutions: Electric Fields and Equipotential Surfaces

Mastering Physics Solutions: Electric Fields and Equipotential Surfaces

On February 6, 2012, in Chapter 16: Electric Potential, Energy, and Capacitance, by Mastering Physics Solutions

Part A = 0 J
Part B = 1 J
Part C = greater than the magnitude of the electric field at point B.

What is the work WAB done by the electric force to move a 1 C charge from A to B?
What is the work WAD done by the electric force to move a 1 C charge from A to D?
The magnitude of the electric field at point C is

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Mastering Physics Solutions: Exercise 16.17 (Electric Potential at the Center of the Triangle)

Mastering Physics Solutions: Exercise 16.17 (Electric Potential at the Center of the Triangle)

On February 5, 2012, in Chapter 16: Electric Potential, Energy, and Capacitance, by Mastering Physics Solutions

Part A = 3.4 * 105 J Click to use the calculator/solver for this part of the problem
Part B = 2.2 * 105 J Click to use the calculator/solver for this part of the problem

What is the value of the electric potential at the center of the triangle if q1 = 4.5 μC, q2 = 3.8 μC, q3 = -4.0 μC?
What is the value of the electric potential at a point midway between q2 and q3 i the figure ?

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Mastering Physics Solutions: Question 16.2

Mastering Physics Solutions: Question 16.2

On February 5, 2012, in Chapter 16: Electric Potential, Energy, and Capacitance, by Mastering Physics Solutions

Part A = decreases
Part B = increases
Part C = stays the same

When a proton approaches another fixed proton, what happens to the kinetic energy of the approaching proton?
When a proton approaches another fixed proton, what happens to the electric potential energy of the system?
When a proton approaches another fixed proton, what happens to the total energy of the system?

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Mastering Physics Solutions: Exercise 16.30 (Voltage Required to Accelerate a Beam of Protons)

Mastering Physics Solutions: Exercise 16.30 (Voltage Required to Accelerate a Beam of Protons)

On February 4, 2012, in Chapter 16: Electric Potential, Energy, and Capacitance, by Mastering Physics Solutions

Part A = 3.3 V Click to use the calculator/solver for this part of the problem
Part B = 2.5 * 104 m/s Click to use the calculator/solver for this part of the problem
Part C = 3300 v Click to use the calculator/solver for this part of the problem
Part D = 8.0 * 105 m/s Click to use the calculator/solver for this part of the problem
Part E = 5.0 * 103 V Click to use the calculator/solver for this part of the problem
Part F = 9.8 * 105 m/s Click to use the calculator/solver for this part of the problem

Calculate the voltage required to accelerate a beam of protons initially at rest if they have a kinetic energy of 3.3 eV.
Calculate their speed if they have a kinetic energy of 3.3 eV.

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Mastering Physics Solutions: Energy Stored in a Charge Configuration

Mastering Physics Solutions: Energy Stored in a Charge Configuration

On February 4, 2012, in Chapter 16: Electric Potential, Energy, and Capacitance, by Mastering Physics Solutions

Part A = 0
Part B = figure a

Four point charges, A, B, C, and D, are placed at the corners of a square with side length L. Charges A, B, and C have charge + q, and D has charge – q.

If you calculate W, the amount of work it took to assemble this charge configuration if the point charges were initially infinitely far apart, you will find that the contribution for each charge is proportional to (kq2)/L. In the space provided, enter the numeric value that multiplies the above factor, in W.
Which of the following figures depicts a charge configuration that requires less work to assemble than the configuration in the problem introduction? Assume that all charges have the same magnitude q.

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Mastering Physics Solutions: Electric Potential Energy of Three Point Charges

Mastering Physics Solutions: Electric Potential Energy of Three Point Charges

On February 3, 2012, in Chapter 16: Electric Potential, Energy, and Capacitance, by Mastering Physics Solutions

Part A = 9.11*10−2 J Click to use the calculator/solver for this part of the problem

Three equal point charges, each with charge 1.30 μC, are placed at the vertices of an equilateral triangle whose sides are of length 0.500 m. What is the electric potential energy U of the system? (Take as zero the potential energy of the three charges when they are infinitely far apart.)

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