5. In the figure below, three hollow, concentric spherical conductors are charged as follows: The inner sphere carries a charge +4Q, the middle sphere carries a charge -20. and the outer sphere carries a charge +6Q. What is the charge on the outer surface of the middle sphere? Outer spher (A) Zero (C) +4Q (E) +20 (B)-Q (D)-20 Inner sphere- Middle sphere Electric charge is uniformly distributed inside a sphere of radius 0.30 m. The electric field at a point that is 0.50 m from the center of the sphere is 15x10' N/C and is directed radially outward. The maximum magnitude of the electric field in N/C is: (A) 25x10¹ (B) 20x10 (C) 36x10' (D) 42x10 (E) 48x10 7. Electrically neutral objects cannot exert an electrical force on each other, but they can exert a gravitational force on each other. A) True B) False

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5. In the figure below, three hollow, concentric spherical conductors are charged as
follows: The inner sphere carries a charge +4Q, the middle sphere carries a charge -20.
and the outer sphere carries a charge +6Q. What is the charge on the outer surface of the
middle sphere?
Outer sphere
(A) Zero
(C) +4Q
(E) +2Q
(B)-Q
(D)-2Q
Middle sphere
field at a point that is 0.50 m from the center of the sphere is 15x10' N/C and is directed
6. Electric charge is uniformly distributed inside a sphere of radius 0.30 m. The electric
radially outward. The maximum magnitude of the electric field in N/C is:
+++++
R
(A) 25x10 (B) 20x10' (C) 36x10 (D) 42x10² (E) 48x10
7. Electrically neutral objects cannot exert an electrical force on each other, but they can
exert a gravitational force on each other.
A) True
B) False
8. A charge of uniform volume density (40 nC/m3) fills a cube with 8.0-cm edges. What
is the total electric flux through the surfaces of this cube in (N.m²/C)?
(A) 2.9
(B) 2.0
(C) 2.6
(D) 2.3
(E) 1.8
9. X and Y are two initially uncharged metal spheres on insulating stands, and they are in
contact with each other. A positively charged rod R is brought close to X as shown in
part (a) of the figure. Sphere Y' is now moved away from X, as shown in part (b). What
are the final charge states of X and Y?
(b)
(a)
(XXY
11
Inner sphere.
A) Both X and Y are neutral.
C) X is neutral, and Y' is positive.
E) Both X and Yare negative.
+++++
R
B) X is positive, and Yis neutral.
D) X is negative, and Y' is positive.
Transcribed Image Text:5. In the figure below, three hollow, concentric spherical conductors are charged as follows: The inner sphere carries a charge +4Q, the middle sphere carries a charge -20. and the outer sphere carries a charge +6Q. What is the charge on the outer surface of the middle sphere? Outer sphere (A) Zero (C) +4Q (E) +2Q (B)-Q (D)-2Q Middle sphere field at a point that is 0.50 m from the center of the sphere is 15x10' N/C and is directed 6. Electric charge is uniformly distributed inside a sphere of radius 0.30 m. The electric radially outward. The maximum magnitude of the electric field in N/C is: +++++ R (A) 25x10 (B) 20x10' (C) 36x10 (D) 42x10² (E) 48x10 7. Electrically neutral objects cannot exert an electrical force on each other, but they can exert a gravitational force on each other. A) True B) False 8. A charge of uniform volume density (40 nC/m3) fills a cube with 8.0-cm edges. What is the total electric flux through the surfaces of this cube in (N.m²/C)? (A) 2.9 (B) 2.0 (C) 2.6 (D) 2.3 (E) 1.8 9. X and Y are two initially uncharged metal spheres on insulating stands, and they are in contact with each other. A positively charged rod R is brought close to X as shown in part (a) of the figure. Sphere Y' is now moved away from X, as shown in part (b). What are the final charge states of X and Y? (b) (a) (XXY 11 Inner sphere. A) Both X and Y are neutral. C) X is neutral, and Y' is positive. E) Both X and Yare negative. +++++ R B) X is positive, and Yis neutral. D) X is negative, and Y' is positive.
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