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A rectangular block of ice 8 m on each side and 1.5 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. a) How high does the top of the ice block float above the water level? b) How many penguins of ma...

River Dam generates electricity with water taken from a depth of 110 m and with an average flow rate of 740 m3/s. a) Calculate the power in this flow. Note that the velocity and height of the water are not changed appreciably by the generators, and the pr...