A container has a vertical tube, whose inner radius is 12.00 mm, connected to it

Question

A container has a vertical tube, whose inner radius is 12.00 mm, connected to it at its side. An unknown liquid reaches level A in the container and level B in the tubelevel A being 5.0 cm higher than level B. The liquid supports a 20.0 cm high column of oil, between levels B and C, whose density is 320 kg/m3. In the figure, the gauge pressure at level B is closest to: A) 630 Pa B) 310 Pa C) 470 Pa D) 790 Pa

A container has a vertical tube, whose inner radius is 12.00 mm, connected to it at its side. An unknown liquid reaches level A in the container and level B in the tube½level A being 5.0 cm higher than level B. The liquid supports a 20.0 cm high column of oil, between levels B and C, whose density is 320 kg/m^3. In the figure, the gauge pressure at level B is closest to: A) 630 Pa B) 310 Pa C) 470 Pa D) 790 Pa

Explanation / Answer

Pb=P(atm)+rho*g*h
p(gauge)=320*9.81*0.2=627.84atm

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