What is the density of the 238U nucleus?
a. 
b. 
c. 
d. 
e. 
a.
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Suppose the date is March 21 and the Sun passes through your zenith at noon. Where are you?
A) the equator B) the Tropic of Cancer (latitude 23-1/2°N) C) the Tropic of Capricorn (latitude 23-1/2°S) D) the Arctic Circle (latitude 66-1/2°N) E) the Antarctic Circle (latitude 66-1/2°S)
Which does NOT belong to the same family?
A) infrasonic waves B) ultrasonic waves C) radio waves D) shock waves E) longitudinal waves
Suppose that a certain saber-toothed-tiger contained one gram of 14C [half-life 6000 years] when it died. The approximate 14C content of the remains of this tiger 24,000 years later would be
A) zero grams. B) 1/8 gram. C) 1/32 gram. D) 1/16 gram. E) impossible to predict.
Which Uranian satellite appears to have been the most geologically active?
a. Titania b. Ariel c. Miranda d. Umbriel e. Oberon