Ascuba tank, when fully submerged, displaces 14.3l of seawater. the tank itself has a mass of 12.4 kg and, when "full," contains 2.91kg of air.
a) assuming only a weight and buoyant force act, determine the net force (magnitude) on the fully submerged tank at the beginning of a dive (when it is full of air).
b) assuming only a weight and buoyant force act, determine the net force (magnitude on the fully submerged tank at the end of a dive (when it no longer contains any air).
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