The unit of capacitance, the farad, is dimensionally equivalent to which of the following?
a. V/C
b. V?C
c. J/V
d. C/V
d
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The ideal shape for the primary mirror of a telescope is concave parabolic
a. True b. False Indicate whether the statement is true or false
What is the velocity of the wave in the above figure?
The following figure is a graph of a wave at a fixed position.
The following figure is a graph of the same wave at a fixed time.
A. 150 m/s
B. 200 m/s
C. 250 m/s
D. 300 m/s
E. 450 m/s
Dr. X believes that the Hubble constant is H0 = 55 km/s/Mpc. Dr. Y believes it is H0 = 80 km/s/Mpc. Which statement below automatically follows?
A) Dr. X believes that the universe is expanding, but Dr. Y does not. B) Dr. X believes that the Andromeda Galaxy (a member of our Local Group) is moving away from us at a slower speed than Dr. Y believes. C) Dr. X believes that the universe is older than Dr. Y believes. D) Dr. X believes that the universe will someday stop expanding, while Dr. Y believes it will expand forever. E) Dr. X believes that the universe has a much higher density than Dr. Y believes.
The overall direction of change in the universe is toward
A. a state of increased mass in the universe. B. a state of greater disorder. C. a state of increased organization. D. increased energy content of the universe.