The coefficient of static friction between a book and the level surface it slides on is 0.65. if the mass of the book is 0.2 kg, what minimum initial applied force is required to slide the books across the surface?

Fs = Us * Fn

Fn = .2*9.8

Fs = 0.65*1.96

Fs = 1.274 N

come closer and become far apart and become steam/gas

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.