1. Deimos is about 13 km in diameter and has a density of 2 g/cm3. Assume Deimos is a sphere. What..

1. Deimos is about 13 km in diameter and has a density of 2 g/cm3. Assume Deimos is a sphere. What is its mass? (Note: The volume of a sphere is 4 3r3.)

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1. Deimos is about 13 km in diameter and has a density of 2 g/cm3. Assume Deimos is a sphere. What..
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2. Arrange the following planets is order of increasing surface density of atmospheric gases: Earth; Venus; Mercury; Mars