A girl pulls a loaded sled with mass m = 40 kg on some horizontal snowy pavement with 115 N of force. The velocity of the sled is constant. The coefficient of kinetic friction μk between the runner and the pavement is 0.3 and the angle θ between the cord and the pavement is 20°. Find the magnitude of the normal force by which the sled affects the pavement. Find the magnitude of the friction force that affects the sled.

Makes no sense

Explanation:

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.