A very long wire carries a uniform linear charge density of 7.0 nC/m. What is the electric field strength 16.0 m from the center of the wire at a point on the wire's perpendicular bisector? (?0 = 8.85 × 10-12 C2/N ? m2)
A) 7.9 N/C
B) 3.9 N/C
C) 0.49 N/C
D) 0.031 N/C
A
You might also like to view...
RC Circuits: An uncharged capacitor is connected in series with a resistor, a dc battery, and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the current I through the resistor as a function of time t?
A. A B. B C. C D. D E. E
If the Moon was originally a small planet orbiting the Sun, which was then captured by Earth's gravity, what can we predict about the composition of moon rocks collected by Apollo astronauts?
A. Moon rocks should have some similar, and some different compositional characteristics. B. Moon rocks should have a composition that is the same as Earth's crust. C. Moon rocks should have the same composition as rocks found on Earth. D. Moon rocks should have a completely different composition than rocks found on Earth.
You double your distance from a constant sound source that is radiating equally in all directions. What happens to the intensity of the sound? It reduces to
A) one-half its original value. B) one-fourth its original value. C) one-sixteenth its original value. D) one-eighth its original value. E) 1/ of its original value.
A parallel-plate capacitor is charged by a battery and then the battery is removed and a dielectric of constant K is used to fill the gap between the plates. Inserting the dielectric changes the energy stored by a factor of
A) 1/K. B) K. C) 2. D) K - 1. E) 1 (no change).