Sound travels fastest in
A) air.
B) water.
C) steel.
D) a vacuum.
Answer: C
Physics & Space Science
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A graduated cylinder is typically used to measure which of the following?
a. Temperature b. Composition c. Volume d. Mass
Physics & Space Science
14C has a half-life of 6000 years. An ancient corpse is uncovered and found to have 1/32--one thirty-second--of the normal amount of 14C found in the bodies of people now living. How long has the body been dead?
A) 24,000 years B) 6000 years C) 12,000 years D) 30,000 years E) 36,000 years
Physics & Space Science
Both optical and radio telescopes can suffer from light pollution
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
In an open universe two parallel beams of light will:
A) remain parallel. B) diverge. C) converge. D) circle back on themselves. E) continue on forever.
Physics & Space Science