Alimb with mass 14 kg falls out of a tree from a height of 3.5 m. how much mechanical energy does the limb have just before it hits the ground? (assume there is no air resistance.) a. 480.2 j b. 355.3 j c. 0 j d. 49 j

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

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.