The saying "The present is the key to the past" is a simple way to state the basic geologic concept of ______________
Fill in the blank(s) with correct word
uniformitarianism
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The _____ is a measure of the rate of expansion of the Universe
A) Hubble constant B) Stefan-Boltzmann constant C) Boltzmann constant D) Planck constant
A cube is subjected to a pressure of 12 atmospheres. The un-squeezed length of one side of the cube is 10.000 cm. The squeezed length of one side of the cube is 9.999 cm. The bulk strain on the cube is
a. 
b. 
c. 
d. 
e. 
A bar magnet is broken in half and the magnetic field around one piece is mapped out. What is wrong with this picture?
A. The field lines are pointing in the wrong direction B. There is no south pole C. The field lines should converge on the "N" D. Nothing; this is how the field looks around a broken magnet
Two very small plastic balls of equal mass are released from rest. One of them carries +10 µC of excess charge and the other one carries +1µC of charge. No other charges or fields are present
Which of the following statements are true about them as they move away from each other? (There may be more than one correct choice.) A) The acceleration of the 10-µC ball is 10 times that of the 1-µC ball. B) The acceleration of the 1-µC ball is 10 times that of the 10-µC ball. C) The balls always have accelerations of equal magnitude. D) The speed of the balls keeps increasing. E) The acceleration of the balls keeps increasing.