As the gas in the balloon is released, the car moves in the opposite direction. The bigger the balloon initially, the farther the car moves. This balloon car is a good model of Newton's

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

their crystal patterns have been disrupted by stress

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it has to be b, about 97 percent.