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Review PartA One day when you come into physics lab you find several plastic hemispheres floating like boats in a tank of fresh water. Each lab group is challenged to determine the heaviest rock that can be placed in the bottom of a plastic boat without sinking it. You get one try. Sinking the boat gets you no points, and the maximum number of points goes to the group that can place the heaviest rock without sinking. You begin by measuring one of the hemispheres, finding that it has a mass of 22 g and a diameter of 8.0 cm What is the mass of the heaviest rock that, in perfectly still water, wont sink the plastic boat? Express your answer with the appropriate units m14452 kg Submit Previous Answers Request Answer X Incorrect; Try Again; 7 attempts remaining

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Mass of plastic hemi sphere m 22 g = 0.022 Kg Diameter of hemi sphere d= 8 cm Radius r= 4 cm-4×10-2 m Density of water ρ= 10 Kg/m Volume of hemisphere V Let M be the mass of the heaviest rock Conditio n to be satisfied is Weight of plastic hemisphere + weight of rock- Force of buoyancy (0.022 Kg(9.8m/s2\ +M [9.8 m/s 0.022 + M= 0.134 M 0.112 Kg (or) 112g T4x102 m (103 Kg/m3) (9.8 m/s

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