1) Two point charges are on the x-axis. One charge, q1 = 10 nC, is located at th
ID: 1683440 • Letter: 1
Question
1) Two point charges are on the x-axis. One charge, q1 = 10 nC, is located at the origin, and the othercharge, q2 = 18 nC, is located at x = 9.0 m. What is the force on q2?a) 20 nN in the positive x-direction
b) 20 pN in the positive x-direction
c) 20 nN in the negative x-direction
d) 20 pN in the negative x-direction
e) 180 nN in the positive x-direction
2) A proton is moving in an electric field. the direction of the acceleration of the proton is
a) In the direction the proton is moving
b) opposite the direction the proton is moving
c) perpendicular to the direction the proton is moving
d) in the direction of the electric field
e) opposite the direction of the electric field
3) A thin spherical shell of radius 20 cm has 5.0 C of charge uniformly distributed over its surface. What is the electric field 10 cm from the center of the sphere a) 4.5 x 10^6 N/C inward b) 4.5 x 10^6 N/C outward c) 2.3 x 10^6 N/C inward d)2.3 x 10^6 N/C outward e)0 3) A thin spherical shell of radius 20 cm has 5.0 C of charge uniformly distributed over its surface. What is the electric field 10 cm from the center of the sphere a) 4.5 x 10^6 N/C inward b) 4.5 x 10^6 N/C outward c) 2.3 x 10^6 N/C inward d)2.3 x 10^6 N/C outward e)0
Explanation / Answer
1) Two point charges are on the x-axis. One charge, q1 = 10 nC, is located at the origin, and the othercharge, q2 = 18 nC, is located at x = 9.0 m. What is the force on q2? F=kq1q2/d^2=20pN The two charges are both positive so the force on q2 is along the positive x-direction 2) A proton is moving in an electric field. the direction of the acceleration of the proton is d) in the direction of the electric field 3) A thin spherical shell of radius 20 cm has 5.0 µC of charge uniformly distributed over its surface. What is the electric field 10 cm from the center of the sphere the charge are distributed over the surface so according to Gauss law. 10cm from the center have no electric field e)0
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