Answer:
The height of the oil column above the tank top is 8 cm.
Explanation:
By applying Bernoulli's equation between point A and B as shown in the attached diagram
[tex]P_{atm}+\rho_{oil}g(h+0.12)=P_{atm}+\rho_{water}g(0.06+0.12)[/tex]
Here
- P_atm is the atmospheric pressure.
- ρ_water=998 kg/m3
- ρ_oil=898 kg/m3
- g=9.8 m/s2
[tex]P_{atm}+\rho_{oil}g(h+0.12)=P_{atm}+\rho_{water}g(0.06+0.12)\\898\times (h+0.12)=998 \times (0.06+0.12)\\(h+0.12)=\frac{998}{898} \times (0.18)\\h+0.12=0.20\\h=0.20-0.12\\h=0.08m \approx 8 cm[/tex]
So the height of the oil column above the tank top is 8 cm.
