Two charges Q1 and Q2 are distance d apart. If the electric field is zero at distance 3d/2 from Q1 and d/2 from Q2, along the line joining Q1 and Q2, then what is the relation between Q1 and Q2?

A) Q1 = 9Q2 B) Q1 = -Q2 /9 C) Q1 = Q2 /3 D) Q1 = -3Q2 E) Q1 = -9Q2 A) Q1 = 9Q2 B) Q1 = -Q2 /9 C) Q1 = Q2 /3 D) Q1 = -3Q2 E) Q1 = -9Q2

Exam 1: The Electric Field I: Discrete Charge Distributions

Point charges of 4.0 10^-8 C and -2.0 10^-8 C are placed 12 cm apart. A third point charge of 3.0 *10^-8 C halfway between the first two point charges experiences a force of magnitude

(Multiple Choice)

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Question 41

The SI units of electric fields can be expressed as

(Multiple Choice)

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Question 42

The force between two very small charged bodies is found to be F. If the distance between them is tripled without altering their charges, the force between them becomes

(Multiple Choice)

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Question 43

A small positive charge is located at A. The vector that gives the direction of the electric field at point P is

(Multiple Choice)

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Question 44

A positive charge of 63.0 nC is 15.0 cm from a negative charge of 45.0 nC. The force on one of the charges due to the other is approximately

(Multiple Choice)

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Question 45

A square has equal positive charges at three of its corners, as shown. The direction of the electric field at point P is

(Multiple Choice)

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Question 46

A positive charge of 94.0 nC is 12.0 cm from a negative charge of 53.0 nC. The force on one of the charges due to the other is approximately

(Multiple Choice)

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Question 47

Use the picture for the next problem. A negatively charged particle moving with speed v enters a region of uniform electric field E. -Using the direction compass on the right, the direction of the force on the charge is

(Multiple Choice)

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Question 48

Use the picture for the next problem. A conducting sphere has a net charge of -q and of mass m is suspended from the ceiling by a light string. A uniform electric field E is applied vertical down on the sphere. -The tension T in the string is ____ the weight mg.

(Multiple Choice)

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Question 49

If an object is determined to have a negative charge of 160 nC, you can conclude that the object has an excess of

(Multiple Choice)

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Question 50

$In the diagram, Q1 = 9.0 \mu C and Q2 = -9.0 \mu C. If Q2 has a mass of 3.0 g, a uniform electric field of 1.8 kN/C imposed in the positive y direction would give this particle an acceleration in the y direction of approximately$ In the diagram, Q₁ = 9.0 $\mu$ C and Q₂ = -9.0 $\mu$ C. If Q₂ has a mass of 3.0 g, a uniform electric field of 1.8 kN/C imposed in the positive y direction would give this particle an acceleration in the y direction of approximately

(Multiple Choice)

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Question 51

Which of the following statements about electric field lines are true?

(Multiple Choice)

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Question 52

Charges q₁ and q₂ exert repulsive forces of 10 N on each other. What is the repulsive force when their separation is decreased so that their final separation is 80% of their initial separation?

(Multiple Choice)

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Question 53

A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 * 10^-12 m from the plutonium nucleus?

(Multiple Choice)

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Question 54

$Two small spheres, each with mass m = 5.0 g and charge q, are suspended from a point by threads of length L = 0.30 m. What is the charge on each sphere if the threads make an angle \theta = 20º with the vertical?$ Two small spheres, each with mass m = 5.0 g and charge q, are suspended from a point by threads of length L = 0.30 m. What is the charge on each sphere if the threads make an angle $\theta$ = 20º with the vertical?

(Multiple Choice)

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Question 55

The electric field at point A is zero. What is charge Q₁?

(Multiple Choice)

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Question 56

Which of the following statements about conductors and insulators is NOT correct?

(Multiple Choice)

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Question 57

Coulomb's law and Newton's law of gravitation both involve which of the following?

(Multiple Choice)

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Question 58

Two charges Q₁ and Q₂ are distance d apart. If the electric field is zero at distance 3d/2 from Q₁ and d/2 from Q₂, along the line joining Q₁ and Q₂, then what is the relation between Q₁ and Q₂?

(Multiple Choice)

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Question 59

The direction of the electric field at a point is the same as

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Question 60

Showing 41 - 60 of 87

Point charges of 4.0 10^-8 C and -2.0 10^-8 C are placed 12 cm apart. A third point charge of 3.0 *10^-8 C halfway between the first two point charges experiences a force of magnitude

The SI units of electric fields can be expressed as

The force between two very small charged bodies is found to be F. If the distance between them is tripled without altering their charges, the force between them becomes

A small positive charge is located at A. The vector that gives the direction of the electric field at point P is

A positive charge of 63.0 nC is 15.0 cm from a negative charge of 45.0 nC. The force on one of the charges due to the other is approximately

A square has equal positive charges at three of its corners, as shown. The direction of the electric field at point P is

A positive charge of 94.0 nC is 12.0 cm from a negative charge of 53.0 nC. The force on one of the charges due to the other is approximately

Use the picture for the next problem. A negatively charged particle moving with speed v enters a region of uniform electric field E. -Using the direction compass on the right, the direction of the force on the charge is

Use the picture for the next problem. A conducting sphere has a net charge of -q and of mass m is suspended from the ceiling by a light string. A uniform electric field E is applied vertical down on the sphere. -The tension T in the string is ____ the weight mg.

If an object is determined to have a negative charge of 160 nC, you can conclude that the object has an excess of

Which of the following statements about electric field lines are true?

Charges q₁ and q₂ exert repulsive forces of 10 N on each other. What is the repulsive force when their separation is decreased so that their final separation is 80% of their initial separation?

A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 * 10^-12 m from the plutonium nucleus?

The electric field at point A is zero. What is charge Q₁?

Which of the following statements about conductors and insulators is NOT correct?

Coulomb's law and Newton's law of gravitation both involve which of the following?

Two charges Q₁ and Q₂ are distance d apart. If the electric field is zero at distance 3d/2 from Q₁ and d/2 from Q₂, along the line joining Q₁ and Q₂, then what is the relation between Q₁ and Q₂?

The direction of the electric field at a point is the same as

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

Exam 1: The Electric Field I: Discrete Charge Distributions

Point charges of 4.0 *10-8 C and -2.0 * 10-8 C are placed 12 cm apart. A third point charge of 3.0 *10-8 C halfway between the first two point charges experiences a force of magnitude

The SI units of electric fields can be expressed as

The force between two very small charged bodies is found to be F. If the distance between them is tripled without altering their charges, the force between them becomes

A small positive charge is located at A. The vector that gives the direction of the electric field at point P is

A positive charge of 63.0 nC is 15.0 cm from a negative charge of 45.0 nC. The force on one of the charges due to the other is approximately

A square has equal positive charges at three of its corners, as shown. The direction of the electric field at point P is

A positive charge of 94.0 nC is 12.0 cm from a negative charge of 53.0 nC. The force on one of the charges due to the other is approximately

Use the picture for the next problem. A negatively charged particle moving with speed v enters a region of uniform electric field E. -Using the direction compass on the right, the direction of the force on the charge is

Use the picture for the next problem. A conducting sphere has a net charge of -q and of mass m is suspended from the ceiling by a light string. A uniform electric field E is applied vertical down on the sphere. -The tension T in the string is ____ the weight mg.

If an object is determined to have a negative charge of 160 nC, you can conclude that the object has an excess of

In the diagram, Q1 = 9.0 μ\muμ C and Q2 = -9.0 μ\muμ C. If Q2 has a mass of 3.0 g, a uniform electric field of 1.8 kN/C imposed in the positive y direction would give this particle an acceleration in the y direction of approximately

Which of the following statements about electric field lines are true?

Charges q1 and q2 exert repulsive forces of 10 N on each other. What is the repulsive force when their separation is decreased so that their final separation is 80% of their initial separation?

A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 * 10-12 m from the plutonium nucleus?

Two small spheres, each with mass m = 5.0 g and charge q, are suspended from a point by threads of length L = 0.30 m. What is the charge on each sphere if the threads make an angle θ\thetaθ = 20º with the vertical?

The electric field at point A is zero. What is charge Q1?

Which of the following statements about conductors and insulators is NOT correct?

Coulomb's law and Newton's law of gravitation both involve which of the following?

Two charges Q1 and Q2 are distance d apart. If the electric field is zero at distance 3d/2 from Q1 and d/2 from Q2, along the line joining Q1 and Q2, then what is the relation between Q1 and Q2?

The direction of the electric field at a point is the same as

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

Point charges of 4.0 10^-8 C and -2.0 10^-8 C are placed 12 cm apart. A third point charge of 3.0 *10^-8 C halfway between the first two point charges experiences a force of magnitude

Charges q₁ and q₂ exert repulsive forces of 10 N on each other. What is the repulsive force when their separation is decreased so that their final separation is 80% of their initial separation?

A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 * 10^-12 m from the plutonium nucleus?

The electric field at point A is zero. What is charge Q₁?

Two charges Q₁ and Q₂ are distance d apart. If the electric field is zero at distance 3d/2 from Q₁ and d/2 from Q₂, along the line joining Q₁ and Q₂, then what is the relation between Q₁ and Q₂?