Kepler's third law of planetary motion states, "A planet's _____ squared is proportional to its average distance from the Sun cubed."
a. radius
b. diameter
c. rotational speed
d. orbital period
e. rotational period
d
Physics & Space Science
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The figure shows a graph of the acceleration of an object as a function of the net force acting on it. The mass of this object, in grams, is closest to
A) 130. B) 11. C) 89. D) 8000.
Physics & Space Science
In an AC circuit, the ratio of average current to maximum current is:
a. zero. c. 1.0. b. 0.707. d. 0.5.
Physics & Space Science
What is the effective (rms) current value for an AC current with an amplitude of 15.4 A?
a. 15.4 A b. 7.70 A c. 10.9 A d. 3.92 A e. 2.77 A
Physics & Space Science
Define the amplitude of a wave, and give an example
Physics & Space Science