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A reference planet (planet A) has a flattening index of 0.04. Place in order of roundest...

A reference planet (planet A) has a flattening index of 0.04. Place in order of roundest to flattest the following planets (and include the reference planet)

a) Planet B spins at six times the rate of planet A but has a third the mass and 1/5 the mean radius.

b) The difference between rp and req is the same for planet C as planet A but the ratio of the respective mean radii (planet A: planet C) is 3.

c) Planet D has the same mass as planet C, rotates at 3 times the rate as planet C and its mean radius is 6 times smaller than planet C’s.

Science   Advanced-Physics   
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