The size of Olympus Mons suggests that the crust of Mars is very thick
a. True
b. False
Indicate whether the statement is true or false
True
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At which of the following speeds would the effects predicted by special relativity be most obvious?
A. 0.50c B. 1.11c C. 0.99c D. 0.01c
An insoluble solid that is formed when two liquids (usually aqueous solutions) are mixed is called
a) an acid. b) a precipitate. c) a redox. d) an enzyme.
Suppose we imagine the Sun to be about the size of a grapefruit (about 10 cm across). How far away are the nearest stars (the three stars of Alpha Centauri)?
A) 2.5 miles B) 2,500 miles C) 250 miles D) the length of a football field E) 25,000 miles
A ray of light travels from a glass-to-liquid interface at an angle of 23°. Indices of refraction for the glass and liquid are, respectively, 1.58 and 1.80 . What is the angle of refraction for the ray moving through the liquid?
a. 26.4° b. 20.1° c. 17.5° d. 20.2° e. 26.2°