Reddit a small block of mass m slides along the inner, frictionless surface of a vertical circular track. at point a the magnitude of the block’s acceleration is 2g. 3. what is the magnitude of the normal force on the block at point b?

what was the answer?

like poles repel so keep pushing north to north and repels funny to see this

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.