Consider the appearance of an American flag submerged deep in water. The white stars and red stripes appear
A) cyan and red.
B) cyan and blue.
C) red and black.
D) cyan and black.
Answer: D
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The average distance from Earth to the sun is
a. 1 ly b. 1 million km c. 1 million miles d. 1 billion km e. 1 AU
If the Moon rises around 3 A.M., its phase must be
A) full. B) first quarter. C) third quarter. D) waning crescent. E) waxing crescent.
If a proton inside the nucleus of an atom suddenly turned into a neutron, while the atom retained its original number of electrons, what properties of the atom would change?
A) only its atomic number B) only its atomic mass number C) only its electrical charge D) both its atomic number and atomic mass number, but not its electrical charge E) both its atomic number and electrical charge, but not its atomic mass number
On Mars, the acceleration due to gravity is 8 m/s/s. If an object is dropped over the surface of Mars, how fast will it be moving at the end of 3 seconds of fall?
A) 32 m/s B) 72 m/s C) 16 m/s D) 24 m/s E) 8 m/s