A long nonconducting cylinder (radius = 6.0 mm) has a nonuniform volume charge density given by ?r2, where ? = 6.2 mC/m5 and r is the distance from the axis of the cylinder. What is the magnitude of the electric field at a point 2.0 mm from the axis?
a. 1.4 N/C
b. 1.6 N/C
c. 1.8 N/C
d. 2.0 N/C
e. 5.4 N/C
a
You might also like to view...
If an object's acceleration is positive, its speed must be increasing
a. True b. False Indicate whether the statement is true or false
Suppose the barn shown here is 10 meters long and the pole is 11.5 meters long. What is the minimum velocity that the pole has to travel relative to the barn for someone standing in the barn to measure the pole's length to be 10 meters or less?
a. 1/4 of the speed of light. b. 1/2 of the speed of light. c. 80% of the speed of light. d. The speed of light c. e. 110% of the speed of light.
A 10-kilogram block with an initial velocity of 10 m/s slides 10 meters across a horizontal surface and comes to rest. It takes the block 2 seconds to stop. The stopping force acting on the block is about
A) 5 N. B) 10 N. C) 25 N. D) 50 N. E) none of the above
An emf is induced in a wire by keeping a stationary magnet near the wire
Indicate whether the statement is true or false