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Can anyone help me with this physics problem? Have i done the pie charts correctly? What was Tarzan's maximum speed? Calculate the volume in liters for each of the following? 15.0 g of Na2SO4 from a 10.0 M Na2SO 4 solution? What's the difference between Blue-ray and just a regular DVD? How to find three additional polar representations of (3, 5π/4)? If N = [2,5 ; 1, -3] find N^-1?