In terms of loudness and pitch how would you compare the sounds made by a mosquito flying near your ear and the croaking of a bullfrog ?

The mosquito would have a higher pitch but quiet and the croaking bullfrog would be a lower pitch but loud.

in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.