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Which one of the following provides a better description to why does the atomic radii radius (generally) decreases across a period? When different kinds of paper with different masses are dropped, is the acceleration going to change or not ? I set higher goals than those with whom I work.? Profit is given by the quadratic function P(q). Profit is $0 at q=13 and q=33. Maximal profit is $500. Find an expression for P(q)? Can anyone shed some light on how to solve this. Im having trouble with getting the equation.?