Determine the terminal settling velocity in water of a spherical sand particle of 0.5 mm diameter. the density of the sand is 2.65 x 10^3kg/m3, and the viscosity of water at 25 °c is 1.0 x lo^-3kg-m^-1.s^-1. hint: stokes' law is not appropriate.

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15.3 cos 65 degrees trig

true tan speed = ang vel x radius

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.