If the radius of the earth is 6400.0 km and the atmosphere is 10.0 km high, then the volume of air around the earth is
A. 
B. 
C. 
D. 
A.
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Without greenhouse gases, Earth's surface would be frozen over
Indicate whether the statement is true or false
If you do an experiment on Earth, and then do an identical experiment in a jet plane moving uniformly at a high speed, you get identical results from both experiments. This is an example of __________
Fill in the blank(s) with correct word
When 1.000 kg of ice melts,
J/kg of heat are needed. What is the entropy change in the melting process?
A. 758.0 J/K B. 1,227 J/K C. 1,684 J/K D. 2,316 J/K
Answer the following statement(s) true (T) or false (F)
1. The sun’s mass is about 1000 times that of Jupiter, and the radius of Jupiter’s orbit is about 1100 times the sun’s radius. The center of mass of the sun/Jupiter system is inside the sun. 2. Two stars, one with radius r and the other with radius 3r, orbit each other so that their centers of mass are 25r apart. Assume that the stars have the same uniform density. This system’s center of mass is inside the larger star. 3. Kepler’s 2nd law applies to hyperbolic orbits. 4. Kepler’s 3rd law applies to hyperbolic orbits.