Which one of the following IS a characteristic of Jovian planets?
a. low average density
b. orbits inside the asteroids
c. craters in old surfaces
d. small diameters
e. very few satellites
a
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An electron has a speed of 0.643c. Through what potential difference would the electron need to be accelerated (starting from rest) in order to reach this speed? (c = 3.00 × 108 m/s, e = 1.60 × 10-19 C, mel = 9.11 × 10-31 kg)
A) 160 kV B) 200 kV C) 130 kV D) 180 kV
Astronomers use the _______________ alphabet to identify the bright stars in a constellation in approximate order of brightness
Fill in the blank(s) with correct word
RLC Circuits: As shown in the figure, an ac source whose rms voltage is 80 V is in series with a 100-? resistor and a capacitor whose reactance is 200 ? at the frequency of the source. What is the rms voltage across the capacitor?
A. 66 V B. 68 V C. 70 V D. 72 V E. 74 V
If a non-rotating object has no acceleration, then we can say for certain that it is
A) at rest. B) moving at constant nonzero velocity. C) in mechanical equilibrium. D) all of the above E) none of the above