More toll booths on a highway is analogous to a
A) series circuit.
B) parallel circuit.
C) complex combination of both of these
Answer: B
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An observer in the Northern Hemisphere watches the sky for several hours. Due to the motion of Earth, this observer notices that the stars near the north celestial pole appear to move
a. counter-clockwise around the celestial pole. b. clockwise around the celestial pole. c. from left to right. d. from right to left. e. nearly vertically upward.
A surprise from the Pioneer Venus photos was that:
A) the craters on Venus are all large. B) the clouds rotate around the planet in only four days, very unlike the slow surface rotation. C) the clouds of Venus are mainly water vapor, like our own. D) the highest volcano, Maxwell Mons, protrudes above the cloud deck. E) no impact craters at all are found on the Venusian surface.
The most common form of gas in the disk of the Milky Way Galaxy is
A) molecular hydrogen. B) gas in hot bubbles. C) atomic hydrogen gas. D) gas in stellar winds.
When two or more resistors are connected in parallel to a battery
A) the voltage across each resistor is the same. B) the total current flowing from the battery equals the sum of the currents flowing through each resistor. C) the equivalent resistance of the combination is less than the resistance of any one of the resistors. D) all of the other choices are true.