When gravitational, magnetic and any forces other than static electric forces are not present, electric field lines in the space surrounding a charge distribution show
a. the directions of the forces that exist in space at all times.
b. only the directions in which static charges would accelerate when at points on those lines
c. only the directions in which moving charges would accelerate when at points on those lines.
d. tangents to the directions in which either static or moving charges would accelerate when passing through points on those lines.
e. the paths static or moving charges would take.
d
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Charge of uniform linear density (4.0 nC/m) is distributed along the entire x axis. Determine the magnitude of the electric field on the y axis at y = 2.5 m
a. 36 N/C b. 29 N/C c. 43 N/C d. 50 N/C e. 58 N/C
Which of the following is not a major pattern of motion in the solar system?
A) Nearly all comets orbit the Sun in same direction and roughly the same plane. B) Most of the solar system's large moons orbit in their planet's equatorial plane. C) The Sun and most of the planets rotate in the same direction in which the planets orbit the Sun. D) All of the planets orbit the Sun in the same direction—counterclockwise as viewed from above Earth's north pole.
Two instruments produce a beat frequency of 5 Hz. If one has a frequency of 264 Hz, what could be the frequency of the other instrument?
a. 269 Hz b. 254 Hz c. 264 Hz d. 5 Hz e. 274 Hz
If the distance between two masses is tripled, the gravitational force between them is
A. decreased by a factor of 9. B. increased by a factor of 9. C. increased by a factor of 3. D. decreased by a factor of 3.