A scuba tank, when fully submerged, displaces 15.7 L of seawater. The tank itsel

Question

A scuba tank, when fully submerged, displaces 15.7 L of seawater. The tank itself has a mass of 13.6kg and, when "full," contains 3.10kg of air. The density of seawater is 1025 kg/m3. Assume that only its weight and the buoyant force act on the tank.

Part A Determine the magnitude of the net force on the fully submerged tank at the beginning of a dive (when it is full of air). Express your answer to one significant figure and include the appropriate units.

Part B

Determine the direction of the net force on the fully submerged tank at the end of a dive (when it no longer contains any air).

Explanation / Answer

buoyancy force   

F = rho V g

mg = rho V g

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