Quintessence is the name of the
a. force that lead to the inflationary period of the universe.
b. five dimensional space of the universe.
c. force suspected to cause the current acceleration in the rate of expansion of the universe.
d. one of the particles of dark matter related to WIMPs.
e. the force that holds the proton together.
C
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When a star has stopped contracting and settled down, where is it in the H-R diagram?
A. below the main sequence in the lower left B. in the upper right as a red giant C. on the main sequence D. in the instability strip E. It is not on the H-R diagram at that time.
A monatomic ideal gas is compressed adiabatically to one-third of its initial volume. The resulting pressure will be
A) three times as large as the initial value. B) less than three times as large as the initial value. C) more than three times as large as the initial value. D) equal to the initial value. E) impossible to predict on the basis of this data.
In order to conserve fuel, you modify your car by removing 100 kg of excess weight. How much energy is saved each time you accelerate from 0 to 100 km/hr (62 mph)?
A. 
B. 
C. 
D. 
Jovian planets are found in the inner solar system
a. True b. False Indicate whether the statement is true or false