The proper interpretation of a what a galaxy's redshift measures is ____
a. its motion in space toward the observer
b. its motion in space away from the big bang
c. the stretching of space between the galaxy and the observer
d. the contraction of space between the galaxy and the observer
e. the stretching of space between the galaxy and the big bang
c
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A website ______ is a summary page of links to major pages at the website.
A. search feature B. glossary C. index D. dictionary
An expansion process on an ideal diatomic gas has a linear path between the initial and final states on a pV diagram. The initial pressure is 300 kPa, the initial volume is 0.060 m3, and the initial temperature is 390 K
The ideal gas constant is R = 8.314 J/mol ? K. The final pressure is 150 kPa and the final temperature is 260 K. The work done by the gas is closest to A) 4500 J. B) 2300 J. C) 3400 J. D) 5600 J. E) 6800 J.
Mercury is more than 60 percent denser than the Moon
a. True b. False Indicate whether the statement is true or false
Entropy: A container of ideal gas at STP undergoes an isothermal expansion and its entropy changes by 3.7 J/K. How much work does it do?
A. 0.0 J B. 1.0 × 103 J C. -1.0 × 103 J D. 1.4 × 103 J E. -1.4 × 103 J