Swim Bladder Many ray-finned fish adjust their buoyancy by changing the volume of gas in a swim bladder located just below their spine. Part A If the volume of the fish increases while the mass remains the same, does the buoyant force on the fish increase, decrease, or remain the same? Increase O Decrease O Remain the same Submit Request Answer Part B Calculate the change in the buoyant force on a fish if its volume increases by 13 cm³, assuming it swims in seawater. Express your answer to two significant figures and include appropriate units. HẢ ? Value Units
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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