The erroneous idea that an object needs a force on it to keep moving even at constant velocity was held by
A. Newton.
B. Aristotle.
C. Galileo.
Answer: B
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An object is moving with constant non-zero acceleration in the +x-axis. The position versus time graph of this object is
A) a horizontal straight line. B) a vertical straight line. C) a straight line making an angle with the time axis. D) a parabolic curve. E) a hyperbolic curve.
A heat engine
a. converts heat to work. b. converts heat to internal energy. c. transfers heat from a low-temperature reservoir. d. converts work to heat.
An iPod is 20 cm in front of a flat mirror. You see the reflected image and must refocus your eye, perhaps even take off your eyeglasses, because
A. the image location is 20 cm behind the mirror. B. the image is inverted but virtual. C. your retina has a different curvature than the flat mirror. D. the flat mirror replaces the object in a random direction.
The nitrogen geysers of Triton carry carbon grit into the winds of its atmosphere
Indicate whether the statement is true or false