Asked by sally
"super earths" are known to have similar densities and compositions to earth but they have a mass 2-10x greater than earth. If one of these super earth's had a mass 5x the mass of earth what would be the super earth's radius ?
a) 1.7x earth's radius
b) 2.2x earth's radius
c) 5x earth's radius
d) 7.3x earth's radius
e) 10x earth's radius
ANY HELP IS HIGHLY APPRECIATED!
a) 1.7x earth's radius
b) 2.2x earth's radius
c) 5x earth's radius
d) 7.3x earth's radius
e) 10x earth's radius
ANY HELP IS HIGHLY APPRECIATED!
Answers
Answered by
Steve
since volume grows as the cube of the radial scale factor,
the radius grows as the cube root.
That is, since 8 = 2^3, a planet with 8x earth mass will have ∛8=2x the radius.
...
the radius grows as the cube root.
That is, since 8 = 2^3, a planet with 8x earth mass will have ∛8=2x the radius.
...
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