A hemispherical surface (half of a spherical surface) of radius R is located in a uniform electric field of magnitude E that is parallel to the axis of the hemisphere. What is the magnitude of the electric flux through the hemisphere surface?
a. pR2E
b. 4pR2E/3
c. 2pR2E/3
d. pR2E/2
e. pR2E/3
A
You might also like to view...
Potential of Point-Charges: A sphere with radius 2.0 mm carries a +2.0 ?C charge. What is the potential difference, VB - VA, between point B, which is 4.0 m from the center of the sphere, and point A, which is 6.0 m from the center of the sphere? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 1500 V B. -1500 V C. 170 V D. -0.63 V
A granite block is mostly empty space because the atoms in the granite are
A) in perpetual motion. B) mostly empty space themselves. C) held together by electrical forces. D) not as close together as they could be. E) invisible.
Why do astronomers think Miranda has such an unusual surface?
A) It underwent an episode of tidal heating in the past. B) It was squashed by a giant impact. C) It formed from the remains of a giant impact relatively recently. D) Its surface is covered with a powdery dust from micrometeorite impacts. E) Its low temperature affects the colors of its surface ice.
The Doppler Effect is a phenomenon that allows one to measure an object's
A) temperature. B) radius. C) line-of-sight speed. D) chemical composition.