Consider the set of tubes shown in the figure. Each tube contains an unknown flu

Question

Consider the set of tubes shown in the figure. Each tube contains an unknown fluid that is less dense than the water it floats on top of. Rank the four unknown fluids from least dense to most dense.

Please confirm my answer which I am thinking would be least to greatest:  A=C < B < D

If incorrect, please advise approach.

Thanks!

Consider the set of tubes shown in the figure. Each tube contains an unknown fluid that is less dense than the water it floats on top of. Rank the four unknown fluids from least dense to most dense. Please confirm my answer which I am thinking would be least to greatest: A=C

Explanation / Answer

gauge Pressure = rho*g*h

since the gauge pressure is the same

so rho*h should be the same

since hA=hc>hB>hD

so

reverse will be the trend for rho

==> rho(D)>rho(B)>rho(C)=rho(A)

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