If the space shuttle orbits the Earth at an altitude of 380 km, what is the
gravitational field strength due to
the Earth at that altitude? The
mass of the Earth is 5.98x 1024
kg, and the radius of the Earth is
approximately 6.37x106 m.

which statement about this sum is true? −245+2.7

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.

answer(20) psi;