An aquatic organism needs to be neutrally b to stay at a constant depth. Fish accomplish with an internal swim bladder they can fill w that they take in from the water through thei One complication is that the pressure in the bladder matches that of the surrounding wat

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter15: Fluid Mechanics
Section: Chapter Questions
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An aquatic organism needs to be neutrally buoyant
to stay at a constant depth. Fish accomplish this
with an internal swim bladder they can fill with air
that they take in from the water through their gills.
One complication is that the pressure in the swim
bladder matches that of the surrounding water, but
the water pressure changes with depth. Because
the volume of a gas is inversely proportional to
pressure (as you may already know if you have
studied the ideal-gas law), the volume of air in a
fish's swim bladder decreases with depth unless
the fish actively adds more air.
Transcribed Image Text:An aquatic organism needs to be neutrally buoyant to stay at a constant depth. Fish accomplish this with an internal swim bladder they can fill with air that they take in from the water through their gills. One complication is that the pressure in the swim bladder matches that of the surrounding water, but the water pressure changes with depth. Because the volume of a gas is inversely proportional to pressure (as you may already know if you have studied the ideal-gas law), the volume of air in a fish's swim bladder decreases with depth unless the fish actively adds more air.
Review I Constants
Part A
3.
Consider a 3.5 kg freshwater fish whose tissues have an average density of 1050 kg/m³. To what volume in mL must
the swim bladder be inflated for the fish to be neutrally buoyant at the surface?
Express your answer in milliliters to two significant figures.
ΑΣφ
mL
AV =
Submit
Request Answer
Part B
Suppose the fish descends to a depth of 20 m. If the fish does nothing, will its average density increase, decrease, on
unchanged?
Transcribed Image Text:Review I Constants Part A 3. Consider a 3.5 kg freshwater fish whose tissues have an average density of 1050 kg/m³. To what volume in mL must the swim bladder be inflated for the fish to be neutrally buoyant at the surface? Express your answer in milliliters to two significant figures. ΑΣφ mL AV = Submit Request Answer Part B Suppose the fish descends to a depth of 20 m. If the fish does nothing, will its average density increase, decrease, on unchanged?
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