A 4.0-pC point charge is placed at the center of a hollow (inner radius = 2.0 cm, outer radius = 4.0 cm) conducting sphere which has a net charge of 4.0 pC. Determine the magnitude of the electric field at a point which is 6.0 cm from the point charge.
A. 35 N/C
B. 25 N/C
C. 30 N/C
D. 20 N/C
E. 10 N/C
Answer: D
You might also like to view...
A concave mirror will produce
a. only inverted images. b. real or virtual images. c. only virtual images. d. only real images.
Fiber optics in a DVD player contain their light by employing total internal reflection. Designers surround the pure glass core with another type of glass, called cladding, that has a different index of refraction from the core.
How should you select a cladding?
A. Cladding must have a larger index of refraction than the core B. Cladding must have a smaller index of refraction than the core
During the Cenozoic, animals grew to great sizes and proportions. The woolly mammoth and the saber tooth tiger were much larger than animals we see today. Some of the causes for their extinction may be
A) the emergence of man and competition for food. B) burning of the grasslands, severe climatic change, and man's emergence. C) dwindling food supplies, extreme climatic variation, and man's emergence. D) the extensive ice sheets that covered the land surface.
What is the primary physical law responsible for the heating of the solar nebula as it collapsed?
a. conservation of energy b. conservation of momentum c. conservation of angular momentum d. Kepler’s third law