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Question 1

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Two identical negative charges are located on the y axis, at y = +4m and y = -4m. A positive charge of 0.25C is placed on the x axis at x = 2m. What direction does the net force on the proton point? Select one: A. At a 45 degree angle in the third quadrant B. Along the +y axis C. At a 45 degree angle in the first quadrant D. Along the -y axis E. Along the -x axis F. At a 45 degree angle in the second quadrant G. Along the +x axis H. At a 45 degree angle in the fourth quadrant

Question 2

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The electric force on a proton due to a uniform distribution of charge on a spherical shell is zero Select one: A. only if the proton is at the center of the shell B. only if the proton is outside the shell C. nowhere D. only if the proton is inside the shell E. if the proton is in contact with the shell

Question 3

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When a hard rubber rod is given a negative charge by rubbing it with wool, Select one: A. negative charges are created on the rod B. positive charges are transferred from rod to wool C. negative charges are transferred from wool to rod D. positive charges are transferred from wool to rod E. negative charges are transferred from rod to wool

Question 4

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Two particles have charges Q and -Q (equal magnitudes, opposite sign). For a net force of zero to be exerted on a third charge, it must be placed Select one: A. midway between Q and -Q B. on the line joining Q and -Q, to the side of Q opposite -Q C. on the line joining Q and -Q, to the side of -Q opposite Q D. None of these (there is no place) E. on the perpendicular bisector of the line joining Q and -Q, but not on that line itself

Question 5

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A charge q1 = 7.5 C is 3 m from a charge q2 = -5.9 C. What is the magnitude of the electrostatic force on q1? Answer:

Question 6

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A -5 ?C charge is placed at the origin. An identical charge is placed 8.9 m from the origin on the x axis. A third identical charge is placed 8.9 m from the origin on the y axis. What is the magnitude of the net electrostatic force on the charge at the origin?

(Don't enter a sign for your force; just the magnitude)
Answer:

Question 7

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A particle with a charge of -1 x 10-6C and a mass of 24 g moves uniformly with a speed of 4 m/s in a circular orbit around a stationary particle of charge 7 x 10-6C. Calculate the radius of the orbit.

(Careful of your units!)
Answer:

Question 8

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Two identical charges, 4.5 m apart, exert forces on each other of 6.3 N on each other. What is the magnitude of the charges? Answer:

Question 9

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A thin spherical shell has a radius of 8 m. If charge is distributed uniformly throughout the surface of the shell with a surface density of ? = 0.36 C/m2, find the total charge on the sphere.
Answer:

Question 10

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A total charge of 7.7 C is distributed uniformly throughout a 2.9 m radius non-conducting sphere. Calculate the volume charge density.

Question 1

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Two identical negative charges are located on the y axis, at y = +4m and y = -4m. A positive charge of 0.25C is placed on the x axis at x = 2m. What direction does the net force on the proton point? Select one: A. At a 45 degree angle in the third quadrant B. Along the +y axis C. At a 45 degree angle in the first quadrant D. Along the -y axis E. Along the -x axis F. At a 45 degree angle in the second quadrant G. Along the +x axis H. At a 45 degree angle in the fourth quadrant

Question 1

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Two identical negative charges are located on the y axis, at y = +4m and y = -4m. A positive charge of 0.25C is placed on the x axis at x = 2m. What direction does the net force on the proton point? Select one: A. At a 45 degree angle in the third quadrant B. Along the +y axis C. At a 45 degree angle in the first quadrant D. Along the -y axis E. Along the -x axis F. At a 45 degree angle in the second quadrant G. Along the +x axis H. At a 45 degree angle in the fourth quadrant Two identical negative charges are located on the y axis, at y = +4m and y = -4m. A positive charge of 0.25C is placed on the x axis at x = 2m. What direction does the net force on the proton point? Select one: A. At a 45 degree angle in the third quadrant B. Along the +y axis C. At a 45 degree angle in the first quadrant D. Along the -y axis E. Along the -x axis F. At a 45 degree angle in the second quadrant G. Along the +x axis H. At a 45 degree angle in the fourth quadrant Select one: A. At a 45 degree angle in the third quadrant B. Along the +y axis C. At a 45 degree angle in the first quadrant D. Along the -y axis E. Along the -x axis F. At a 45 degree angle in the second quadrant G. Along the +x axis H. At a 45 degree angle in the fourth quadrant A. At a 45 degree angle in the third quadrant B. Along the +y axis C. At a 45 degree angle in the first quadrant D. Along the -y axis E. Along the -x axis F. At a 45 degree angle in the second quadrant G. Along the +x axis H. At a 45 degree angle in the fourth quadrant

Question 2

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The electric force on a proton due to a uniform distribution of charge on a spherical shell is zero Select one: A. only if the proton is at the center of the shell B. only if the proton is outside the shell C. nowhere D. only if the proton is inside the shell E. if the proton is in contact with the shell

Question 2

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The electric force on a proton due to a uniform distribution of charge on a spherical shell is zero Select one: A. only if the proton is at the center of the shell B. only if the proton is outside the shell C. nowhere D. only if the proton is inside the shell E. if the proton is in contact with the shell The electric force on a proton due to a uniform distribution of charge on a spherical shell is zero Select one: A. only if the proton is at the center of the shell B. only if the proton is outside the shell C. nowhere D. only if the proton is inside the shell E. if the proton is in contact with the shell Select one: A. only if the proton is at the center of the shell B. only if the proton is outside the shell C. nowhere D. only if the proton is inside the shell E. if the proton is in contact with the shell A. only if the proton is at the center of the shell B. only if the proton is outside the shell C. nowhere D. only if the proton is inside the shell E. if the proton is in contact with the shell

Question 3

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When a hard rubber rod is given a negative charge by rubbing it with wool, Select one: A. negative charges are created on the rod B. positive charges are transferred from rod to wool C. negative charges are transferred from wool to rod D. positive charges are transferred from wool to rod E. negative charges are transferred from rod to wool

Question 3

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When a hard rubber rod is given a negative charge by rubbing it with wool, Select one: A. negative charges are created on the rod B. positive charges are transferred from rod to wool C. negative charges are transferred from wool to rod D. positive charges are transferred from wool to rod E. negative charges are transferred from rod to wool When a hard rubber rod is given a negative charge by rubbing it with wool, Select one: A. negative charges are created on the rod B. positive charges are transferred from rod to wool C. negative charges are transferred from wool to rod D. positive charges are transferred from wool to rod E. negative charges are transferred from rod to wool Select one: A. negative charges are created on the rod B. positive charges are transferred from rod to wool C. negative charges are transferred from wool to rod D. positive charges are transferred from wool to rod E. negative charges are transferred from rod to wool A. negative charges are created on the rod B. positive charges are transferred from rod to wool C. negative charges are transferred from wool to rod D. positive charges are transferred from wool to rod E. negative charges are transferred from rod to wool

Question 4

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Two particles have charges Q and -Q (equal magnitudes, opposite sign). For a net force of zero to be exerted on a third charge, it must be placed Select one: A. midway between Q and -Q B. on the line joining Q and -Q, to the side of Q opposite -Q C. on the line joining Q and -Q, to the side of -Q opposite Q D. None of these (there is no place) E. on the perpendicular bisector of the line joining Q and -Q, but not on that line itself

Question 4

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Two particles have charges Q and -Q (equal magnitudes, opposite sign). For a net force of zero to be exerted on a third charge, it must be placed Select one: A. midway between Q and -Q B. on the line joining Q and -Q, to the side of Q opposite -Q C. on the line joining Q and -Q, to the side of -Q opposite Q D. None of these (there is no place) E. on the perpendicular bisector of the line joining Q and -Q, but not on that line itself Two particles have charges Q and -Q (equal magnitudes, opposite sign). For a net force of zero to be exerted on a third charge, it must be placed Select one: A. midway between Q and -Q B. on the line joining Q and -Q, to the side of Q opposite -Q C. on the line joining Q and -Q, to the side of -Q opposite Q D. None of these (there is no place) E. on the perpendicular bisector of the line joining Q and -Q, but not on that line itself Select one: A. midway between Q and -Q B. on the line joining Q and -Q, to the side of Q opposite -Q C. on the line joining Q and -Q, to the side of -Q opposite Q D. None of these (there is no place) E. on the perpendicular bisector of the line joining Q and -Q, but not on that line itself A. midway between Q and -Q B. on the line joining Q and -Q, to the side of Q opposite -Q C. on the line joining Q and -Q, to the side of -Q opposite Q D. None of these (there is no place) E. on the perpendicular bisector of the line joining Q and -Q, but not on that line itself

Question 5

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A charge q1 = 7.5 C is 3 m from a charge q2 = -5.9 C. What is the magnitude of the electrostatic force on q1? Answer:

Question 5

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A charge q1 = 7.5 C is 3 m from a charge q2 = -5.9 C. What is the magnitude of the electrostatic force on q1? Answer: A charge q1 = 7.5 C is 3 m from a charge q2 = -5.9 C. What is the magnitude of the electrostatic force on q1? Answer:

Question 6

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A -5 ?C charge is placed at the origin. An identical charge is placed 8.9 m from the origin on the x axis. A third identical charge is placed 8.9 m from the origin on the y axis. What is the magnitude of the net electrostatic force on the charge at the origin?

(Don't enter a sign for your force; just the magnitude)
Answer:

Question 6

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A -5 ?C charge is placed at the origin. An identical charge is placed 8.9 m from the origin on the x axis. A third identical charge is placed 8.9 m from the origin on the y axis. What is the magnitude of the net electrostatic force on the charge at the origin?

(Don't enter a sign for your force; just the magnitude)
Answer: A -5 ?C charge is placed at the origin. An identical charge is placed 8.9 m from the origin on the x axis. A third identical charge is placed 8.9 m from the origin on the y axis. What is the magnitude of the net electrostatic force on the charge at the origin?

(Don't enter a sign for your force; just the magnitude)
Answer:

Question 7

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A particle with a charge of -1 x 10-6C and a mass of 24 g moves uniformly with a speed of 4 m/s in a circular orbit around a stationary particle of charge 7 x 10-6C. Calculate the radius of the orbit.

(Careful of your units!)
Answer:

Question 7

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A particle with a charge of -1 x 10-6C and a mass of 24 g moves uniformly with a speed of 4 m/s in a circular orbit around a stationary particle of charge 7 x 10-6C. Calculate the radius of the orbit.

(Careful of your units!)
Answer: A particle with a charge of -1 x 10-6C and a mass of 24 g moves uniformly with a speed of 4 m/s in a circular orbit around a stationary particle of charge 7 x 10-6C. Calculate the radius of the orbit.

(Careful of your units!)
Answer:

Question 8

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Two identical charges, 4.5 m apart, exert forces on each other of 6.3 N on each other. What is the magnitude of the charges? Answer:

Question 8

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Two identical charges, 4.5 m apart, exert forces on each other of 6.3 N on each other. What is the magnitude of the charges? Answer: Two identical charges, 4.5 m apart, exert forces on each other of 6.3 N on each other. What is the magnitude of the charges? Answer:

Question 9

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A thin spherical shell has a radius of 8 m. If charge is distributed uniformly throughout the surface of the shell with a surface density of ? = 0.36 C/m2, find the total charge on the sphere.
Answer:

Question 9

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A thin spherical shell has a radius of 8 m. If charge is distributed uniformly throughout the surface of the shell with a surface density of ? = 0.36 C/m2, find the total charge on the sphere.
Answer: A thin spherical shell has a radius of 8 m. If charge is distributed uniformly throughout the surface of the shell with a surface density of ? = 0.36 C/m2, find the total charge on the sphere.
Answer:

Question 10

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A total charge of 7.7 C is distributed uniformly throughout a 2.9 m radius non-conducting sphere. Calculate the volume charge density.

Question 10

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A total charge of 7.7 C is distributed uniformly throughout a 2.9 m radius non-conducting sphere. Calculate the volume charge density. A total charge of 7.7 C is distributed uniformly throughout a 2.9 m radius non-conducting sphere. Calculate the volume charge density.

Explanation / Answer

1) E

2) D

3) C

4) D

5) 4.425*10^10 N

6) 4.016*10^-3 N.....(45 degree to -ve x-axis)

7) 0.164 m

8) 1.19*10^-4 C

9) 289.52 C

10) 0.0753 C/m^3

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