7. To swing a pail of water around in a vertical circle fast enough so that the water doesn't spill out when the pail is upside
down. If Axel's arm is 0.60 m long, what is the minimum
speed with which he can swing the pail so that the water
doesn't spill out at the top of the path?

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.

because growing process had stoped after 4-5 year

the rearrangement of particles in a physical change. hope this