an open tank holds water 1.25m deep .if a small hole of cross section area 3cm² is made at the bottom of the tank .calculate the mass of water per seconds initially flowing out of the hole (g =10m/s²,density of water = 100kgm-³​

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.

it would be c. predictability