Tania's little sister sits 1.2 m from the pivot of a see-saw. Her mass provides a force of 200 N. Tania pushes down on the other end of the see-saw to make it balance. The maximum pushing force she can
provide is 100 N. How far from the pivot must Tania push to make the see-saw balance?

which three statements are true about all alloys?

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.