A) are about 2000 times more massive than protons. B) are about 2000 times less massive than protons. C) have 2000 times the charge of protons. D) have 1/2000 the charge of protons. E) can have any amount of charge. A) are about 2000 times more massive than protons. B) are about 2000 times less massive than protons. C) have 2000 times the charge of protons. D) have 1/2000 the charge of protons. E) can have any amount of charge.

Use the picture for the next problem. A negatively charged particle moving with speed v enters a region of uniform electric field E. -If the charge q = 1 nC, mass m = 1 * 10-14 kg, speed v = 105 m/s, the electric field strength E = 2 *105 V/m, and width, w, of the electric field is 0.2 m, what is the speed of the particle when it emerges from the other side?

A) 1.0 * 105 m/s B) 4.0* 104 m/s C) 1.08 *105 m/s D) 1.4 * 105 m/s E) 1.8 *105 m/s A) 1.0 * 105 m/s B) 4.0* 104 m/s C) 1.08 *105 m/s D) 1.4 * 105 m/s E) 1.8 *105 m/s

An oil droplet of mass 1.00 *10-14 kg loses an electron while it is in an electric field of 1.00 *106 N/C. The resulting change in the acceleration of the oil droplet is approximately

A) 1.76* 1017 m/s2 B) 16.0 m/s2 C) 1.60 m/s2 D) 1.76 * 1018 m/s2 E) 176 m/s2 A) 1.76* 1017 m/s2 B) 16.0 m/s2 C) 1.60 m/s2 D) 1.76 * 1018 m/s2 E) 176 m/s2

A) are about 2000 times more massive than electrons. B) are about 2000 times less massive than electrons. C) have 2000 times the charge of electrons. D) have 1/2000 the charge of electrons. E) can have any amount of charge. A) are about 2000 times more massive than electrons. B) are about 2000 times less massive than electrons. C) have 2000 times the charge of electrons. D) have 1/2000 the charge of electrons. E) can have any amount of charge.

Exam 1: The Electric Field I: Discrete Charge Distributions

A uniformly positively charged spherical conductor is placed midway between two identical uncharged conducting spheres. How would the charges in the middle sphere be distributed?

(Multiple Choice)

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Question 21

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

(Multiple Choice)

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Question 22

An electric dipole of moment is placed in a uniform external electric field as shown in the diagram. The dipole moment vector is in the positive y direction. The external electric field vector is in the positive x direction. If the dipole is to have minimum potential energy, should be in the

(Multiple Choice)

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Question 23

Electrons

(Multiple Choice)

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Question 24

In the figure, the direction of the electric field at a point equidistant from two equally charged bodies A and B is indicated by a vector. The direction of the vector indicates that

(Multiple Choice)

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Question 25

Use the picture for the next problem. A negatively charged particle moving with speed v enters a region of uniform electric field E. -If the charge q = 1 nC, mass m = 1 * 10^-14 kg, speed v = 10⁵ m/s, the electric field strength E = 2 *10⁵ V/m, and width, w, of the electric field is 0.2 m, what is the speed of the particle when it emerges from the other side?

(Multiple Choice)

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Question 26

The Coulomb's force between a proton and an electron is 2.27*10³⁹ times greater than the gravitational force. If the two forces were equal, what should the size of the elementary charge be

(Multiple Choice)

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Question 27

An oil droplet of mass 1.00 10^-14 kg loses an electron while it is in an electric field of 1.00 10⁶ N/C. The resulting change in the acceleration of the oil droplet is approximately

(Multiple Choice)

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Question 28

Charges Q₁ = -q and Q₂ = +4q are placed as shown. Of the five positions indicated by the numbered dots, the one at which the electric field is zero is

(Multiple Choice)

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Question 29

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

(Multiple Choice)

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Question 30

Protons

(Multiple Choice)

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Question 31

If a charge of +2Q were placed at the origin (the crossing point of the vertical and horizontal lines) of the above figure, into which quadrant would it feel a net force?

(Multiple Choice)

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Question 32

Electric charges of the same sign

(Multiple Choice)

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Question 33

An electric dipole consists of a positive charge separated from a negative charge of the same magnitude by a small distance. Which, if any, of the diagrams best represents the electric field lines around an electric dipole?

(Multiple Choice)

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Question 34

Three charges are located at 100-m intervals along a horizontal line: a charge of -3.0 C on the left, 2.0 C in the middle, and 1.0 C on the right. What is the electric field on the horizontal line halfway between the -3.0 C and 2.0 C charges?

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Question 35

An electric dipole of moment is placed in a uniform external electric field. The dipole moment vector is in the positive y direction. The external electric field vector is in the positive x direction. When the dipole is aligned as shown in the diagram, the net torque is in the

(Multiple Choice)

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Question 36

$A bob of mass m (m = 0.500 g), and charge magnitude Q (Q = 50.0 \mu C) is held by a massless string in a uniform electric field E. If the bob makes an angle of 10.0 degrees with the vertical, then calculate the magnitude of the electric field E and the sign of the bob charge Q.$ A bob of mass m (m = 0.500 g), and charge magnitude Q (Q = 50.0 $\mu$ C) is held by a massless string in a uniform electric field E. If the bob makes an angle of 10.0 degrees with the vertical, then calculate the magnitude of the electric field E and the sign of the bob charge Q.

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Question 37

Three positive and equal charges Q₁, Q₂, and Q₃ are at the corners of an equilateral triangle as shown. Point P is at the midpoint of the line between Q₁ and Q₃. The electric field at P is

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Question 38

A proton is moving horizontally north in an electric field that points vertically upward. The electric force on the proton is

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Question 39

In a uniform electric field a proton has

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Question 40

Showing 21 - 40 of 87

A uniformly positively charged spherical conductor is placed midway between two identical uncharged conducting spheres. How would the charges in the middle sphere be distributed?

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

An electric dipole of moment is placed in a uniform external electric field as shown in the diagram. The dipole moment vector is in the positive y direction. The external electric field vector is in the positive x direction. If the dipole is to have minimum potential energy, should be in the

Electrons

In the figure, the direction of the electric field at a point equidistant from two equally charged bodies A and B is indicated by a vector. The direction of the vector indicates that

The Coulomb's force between a proton and an electron is 2.27*10³⁹ times greater than the gravitational force. If the two forces were equal, what should the size of the elementary charge be

An oil droplet of mass 1.00 10^-14 kg loses an electron while it is in an electric field of 1.00 10⁶ N/C. The resulting change in the acceleration of the oil droplet is approximately

Charges Q₁ = -q and Q₂ = +4q are placed as shown. Of the five positions indicated by the numbered dots, the one at which the electric field is zero is

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

Protons

If a charge of +2Q were placed at the origin (the crossing point of the vertical and horizontal lines) of the above figure, into which quadrant would it feel a net force?

Electric charges of the same sign

An electric dipole consists of a positive charge separated from a negative charge of the same magnitude by a small distance. Which, if any, of the diagrams best represents the electric field lines around an electric dipole?

Three charges are located at 100-m intervals along a horizontal line: a charge of -3.0 C on the left, 2.0 C in the middle, and 1.0 C on the right. What is the electric field on the horizontal line halfway between the -3.0 C and 2.0 C charges?

An electric dipole of moment is placed in a uniform external electric field. The dipole moment vector is in the positive y direction. The external electric field vector is in the positive x direction. When the dipole is aligned as shown in the diagram, the net torque is in the

Three positive and equal charges Q₁, Q₂, and Q₃ are at the corners of an equilateral triangle as shown. Point P is at the midpoint of the line between Q₁ and Q₃. The electric field at P is

A proton is moving horizontally north in an electric field that points vertically upward. The electric force on the proton is

In a uniform electric field a proton has

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

A uniformly positively charged spherical conductor is placed midway between two identical uncharged conducting spheres. How would the charges in the middle sphere be distributed?

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

An electric dipole of moment is placed in a uniform external electric field as shown in the diagram. The dipole moment vector is in the positive y direction. The external electric field vector is in the positive x direction. If the dipole is to have minimum potential energy, should be in the

Electrons

In the figure, the direction of the electric field at a point equidistant from two equally charged bodies A and B is indicated by a vector. The direction of the vector indicates that

The Coulomb's force between a proton and an electron is 2.27*1039 times greater than the gravitational force. If the two forces were equal, what should the size of the elementary charge be

An oil droplet of mass 1.00 *10-14 kg loses an electron while it is in an electric field of 1.00 *106 N/C. The resulting change in the acceleration of the oil droplet is approximately

Charges Q1 = -q and Q2 = +4q are placed as shown. Of the five positions indicated by the numbered dots, the one at which the electric field is zero is

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

Protons

If a charge of +2Q were placed at the origin (the crossing point of the vertical and horizontal lines) of the above figure, into which quadrant would it feel a net force?

Electric charges of the same sign

An electric dipole consists of a positive charge separated from a negative charge of the same magnitude by a small distance. Which, if any, of the diagrams best represents the electric field lines around an electric dipole?

Three charges are located at 100-m intervals along a horizontal line: a charge of -3.0 C on the left, 2.0 C in the middle, and 1.0 C on the right. What is the electric field on the horizontal line halfway between the -3.0 C and 2.0 C charges?

An electric dipole of moment is placed in a uniform external electric field. The dipole moment vector is in the positive y direction. The external electric field vector is in the positive x direction. When the dipole is aligned as shown in the diagram, the net torque is in the

A bob of mass m (m = 0.500 g), and charge magnitude Q (Q = 50.0 μ\muμ C) is held by a massless string in a uniform electric field E. If the bob makes an angle of 10.0 degrees with the vertical, then calculate the magnitude of the electric field E and the sign of the bob charge Q.

Three positive and equal charges Q1, Q2, and Q3 are at the corners of an equilateral triangle as shown. Point P is at the midpoint of the line between Q1 and Q3. The electric field at P is

A proton is moving horizontally north in an electric field that points vertically upward. The electric force on the proton is

In a uniform electric field a proton has

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

The Coulomb's force between a proton and an electron is 2.27*10³⁹ times greater than the gravitational force. If the two forces were equal, what should the size of the elementary charge be

An oil droplet of mass 1.00 10^-14 kg loses an electron while it is in an electric field of 1.00 10⁶ N/C. The resulting change in the acceleration of the oil droplet is approximately

Charges Q₁ = -q and Q₂ = +4q are placed as shown. Of the five positions indicated by the numbered dots, the one at which the electric field is zero is

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

Three positive and equal charges Q₁, Q₂, and Q₃ are at the corners of an equilateral triangle as shown. Point P is at the midpoint of the line between Q₁ and Q₃. The electric field at P is