A new Moon appears in the sky just before the time of a
A) solar eclipse.
B) lunar eclipse.
C) both of these
D) neither of these
Answer: A
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A rock is suspended from a scale reads 20.0 N. A beaker of water is raised up so the rock is totally submerged in the water. The scale now reads 12.5 N. What is the density of the rock?
A) 1.60 × 103 kg/m3 B) 2.50 × 103 kg/m3 C) 2.33 × 103 kg/m3 D) 3.00 × 103 kg/m3 E) 2.67 × 103 kg/m3
Typically, astronomers express the right ascension of a star on the sky in what units?
A. lightyears B. kilometers C. hours and minutes and seconds D. quarters
Fissioning an iron nucleus would occur with
A) absorption of energy. B) release of energy. C) neither absorption nor release of energy
A gas in which the pressure no longer depends on the temperature of the gas is said to be ____________________
Fill in the blank(s) with correct word