At what point is the charge per unit area greatest on the surface of an irregularly shaped conducting solid?
a. where surface curves inward
b. where surface is flat
c. where curvature is least
d. where curvature is greatest
d
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Which of the following statements was true beyond the frost line (but not interior to it)?
a. It was so warm that only metal and rock could condense from the gas. b. This was the only region that flattened into a disk. c. No object as small as a terrestrial planet could form. d. It was cold enough for hydrogen compounds to condense into ices
The necessary chemical elements of life should
A) only be found on the Earth and Mars B) be widespread in the solar system but not elsewhere in our Milky Way galaxy C) be widespread throughout the universe D) be widespread in our Milky Way galaxy but not in other galaxies
All three circuits below have R = 100 ?, C = 1.0 mF, and emf ? = (5.0 V) sin (377 t). The inductors in (B) and (C) are placed sufficiently far apart so that they do not alter one another's inductance. Such inductors add combine like resistors. Which statement regarding the angular resonance frequencies ?A, ?B, and ?C is correct?
?
?
A. ?C>?A = ?B B. ?C
Constant Acceleration Kinematics: A cart starts from rest and accelerates uniformly at 4.0 m/s2 for 5.0 s. It next maintains the velocity it has reached for 10 s. Then it slows down at a steady rate of 2.0 m/s2 for 4.0 s. What is the final speed of the car?
A. 20 m/s B. 16 m/s C. 12 m/s D. 10 m/s