A50 kg box sits at rest on a 30 degree ramp where the coef of static friction is 0.5773 what is the weight of the box?

Given Data:

mass (m) = 50 Kg

W = m*g = 50×9.81 = 490.5 N

Coefficient of static friction (μs) = 0.5773

ramp angle = 30 degrees

determine Normal force=?

From the figure we know that

Normal force (N) = μs.W cosΘ

                           = 0.5773 ×490.5×cos 30

                           = 245.22 N

Therefore, The Normal force = 245.23 N

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.