A jet plane lands with velocity of 100m/s and can accelerate at a maximum rate of -5m/s2 as it come to rest. From the instant it touches the runway, what is the minimum time needed before it stops?

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary 

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.

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answer///terminator or twilight zone;

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.