Let's look at them in turn until we find the correct answer:
A) Rile is a kind of formation on the moon, but it's not a mineral
B) brecchia is a kind of rock composed of broken minerals. But, lunar breccias would not be similar to those found on earth
C) is the correct answer! it's a mineral containing silica
Answer:
Explanation:
from the question we are told that
Load 
Force
Angle of inclination 
Displacement 
coefficient of kinetic friction 
Answer:
I think it is 5.6. This is my answer
Answer:
law of Action and Reaction F = 2250 N
Explanation:
The tractor and the trailer are two bodies that interact, therefore, by the law of Action and Reaction, the force that one applies on the other is equal to the force that the second body (trailer) applies on the first (tractor), but with opposite direction
F = 2250 N
directed from trailer to tractor