What is the correct unit of work expressed in SI units?
A) kg m/s2
B) kg m2/s
C) kg m2/s2
D) kg2 m/s2
Ans: C) kg m2/s2
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In the context of light curves, observations of an eclipsing binary system can directly tell astronomers not only the masses of its stars but also their _____
A) orbital periods B) diameters C) intensity of magnetic fields D) temperatures
Ptolemy's model of the universe
a. was heliocentric. b. included elliptical orbits. c. contained epicycles. d. was heliocentric, included elliptical orbits, and contained epicycles. e. None of the other choices are correct.
An RGB color system can produce more than 16.7 million possible colors.
Answer the following statement true (T) or false (F)
A boat loaded with rocks is floating in a swimming pool. If the rocks are thrown into the pool, the water level in the pool, after the rocks have settled to the bottom,
A) falls. B) rises. C) stays the same.