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Fish control their buoyancy with a gas-filled organ called a swim bladder. The average density of a particular fish's tissues, not including gas in the bladder, is 1080 kg/m^3. If the fish's mass is 8.8 kg, what volume of gas in its swim bladder will keep it in neutral buoyancy-neither sinking nor rising-at a depth where the density of the surrounding seawater is 1028 kg/m^3 ? Neglect the mass of the bladder gas.
I don't know if I did this right but can someone correct me if I'm wrong:
dwater (density of water)
Neutral buoyancy means equilibrium: Fb = Wfish
dwater*Vdisplaced*g = dfish*Vfish*g => Vdisplaced = (dfish/dwater)*Vfish
Vfish = mass/d = 8.8/1080 = 0.00815 m^3
Vdisplaced = (8.8)(0.00815)/1028 = 6.98*10^-5 m^3
Would this be the volume of gas? It seems awfully small to me thats why I'm confused. Any help would be greatly appreciated. Thanx.
I don't know if I did this right but can someone correct me if I'm wrong:
dwater (density of water)
Neutral buoyancy means equilibrium: Fb = Wfish
dwater*Vdisplaced*g = dfish*Vfish*g => Vdisplaced = (dfish/dwater)*Vfish
Vfish = mass/d = 8.8/1080 = 0.00815 m^3
Vdisplaced = (8.8)(0.00815)/1028 = 6.98*10^-5 m^3
Would this be the volume of gas? It seems awfully small to me thats why I'm confused. Any help would be greatly appreciated. Thanx.