Harley Quinn is riding her motorbike south along a flat , horizontal road . The total weight of Harley and her hog is 1800 N. The engine exerts a 600 N force forward . The air resistance acting on Harley and the bike is 200 N. The total friction between the tires and the road is 100 N. a ) Draw a f. b. diagram for the system that includes Hayley and her motorbike.
b ) Calculate the net force on the system.
c ) Determine the mass of Hayley & her motorbike.​

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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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i'm on my way to history not a mistory.