You and your friend want to go to the top of the Eiffel Tower. Your friend takes the elevator straight up. You decide to walk up the spiral stairway, taking longer to do so
Compare the gravitational potential energy (U) of you and your friend, after you both reach the top. A) It is impossible to tell, since the times are unknown.
B) It is impossible to tell, since the distances are unknown.
C) Your friend's U is greater than your U, because she got to the top faster.
D) Both of you have the same amount of potential energy.
E) Your U is greater than your friend's U, because you traveled a greater distance in getting to the top.
D
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Metabolism is a term that describes the
A) breaking down of complex organic molecules by bacteria B) rate at which molecules travel across cell membranes C) chemical processes that occur inside cells D) rate of cell division of bacteria
If you increase the initial speed of a bullet by 10%, the resultant RANGE will increase by what percent (assume air resistance can be ignored)?
A) 5.0% B) 20% C) 10% D) 21% E) 11%
The very earliest Greek theory of the structure of the universe pictured Earth at the center with the planets revolving around it at an unchanging rate in simple circles. The Greeks later revised this theory because
A) they didn't believe the theory was sufficiently beautiful to represent the eternal gods. B) they observed that the planetary motions are irregular and include such things as retrograde motion. C) certain observations led them to the conclusion that Earth has a spherical shape. D) they came to believe that the sun should be at the center of things. E) Actually, the Greeks never did abandon this theory--the theory was not altered until the time of Copernicus.
If you are standing at the Earth's North Pole, which of the following would be located at the zenith?
a. The nadir
b. The star Vega
c. The celestial equator
d. The north celestial pole