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Q. A curve of radius 152 m is banked at an angle of 11°. An 722-kg car negotiates the curve at 86 km/h without skidding. Neglect the effects of air drag and rolling friction. Find the following. (a) the normal force exerted by the pavement on the tires(b) the frictional force exerted by the pavement on the tires(c) the minimum coefficient of static friction between the pavement and the tires

Q. Estimate how many kilograms of hydrogen the sun has consumed over the past 4.56 billion years and estimate the amount of mass the sun has lost as a result. assume the suns luminosity has remained constant during that time.

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