A dog sits on a flat surface. If the dog has a mass of 13 kg, what is the normal force acting on it? 85 N
13 N
127 N
41 N

127

Explanation:

f(n)=mg

(13)*(9.81)

127.4N

nah.   i'm just sleepy.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

hope this ! this is not copied! search it up, it's free of plagiarism!