- #1
Saladsamurai
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I don't know why I can't set up this proportion correctly.
A fish maintains its depth in fresh water by adjusting air contents in air sacs in its body. With its air sacs fully collapsed the fish has a density of 1.08 g/cm^3.
To what fraction of its expanded body volume does it need to inflate its air sacs to reduce its density to that of the water.
I can't seem to set this up. It is asking for [tex]\frac{V_{empty}}{V_{max}} [/tex] I know that [tex]\rho =m/V[/tex] [tex]\rho_w=\frac{1g}{cm^3}[/tex] and [tex]\rho_{fish}=1.08\frac{g}{cm^3}[/tex]
I am not sure what my problem is right now. Anyine have a hint?
Casey
Am I an idiot for not getting this?
A fish maintains its depth in fresh water by adjusting air contents in air sacs in its body. With its air sacs fully collapsed the fish has a density of 1.08 g/cm^3.
To what fraction of its expanded body volume does it need to inflate its air sacs to reduce its density to that of the water.
I can't seem to set this up. It is asking for [tex]\frac{V_{empty}}{V_{max}} [/tex] I know that [tex]\rho =m/V[/tex] [tex]\rho_w=\frac{1g}{cm^3}[/tex] and [tex]\rho_{fish}=1.08\frac{g}{cm^3}[/tex]
I am not sure what my problem is right now. Anyine have a hint?
Casey
Am I an idiot for not getting this?
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