Please tell me whether the ATMOSPHERIC PRESSURE should be used in the calculatio

Question

Please tell me whether the ATMOSPHERIC PRESSURE should be used in the calculation. Or just use P=pgh.

Thanks

A tapered, cylindrical flask (i.e., diameter varies with vertical position) contains a mixture of oil and water. The diameter of the opening of the flask is 5 cm and the diameter at the bottom is 35 cm. The water depth is 1.2 cm and has a specific gravity 1.0. The oil depth is 12 cm and has a specific gravity of 0.8.Atmospheric pressure may be assumed to be equal to 101.325 kPa. a. What is the absolute pressure at point A on the bottom of the flask in kPa? b. What is the absolute pressure at point B on the bottom of the flask in kPa? c. Is the flask system at equilibrium?

Explanation / Answer

As in question absolute pressure is asked so YOU must USE atmoshpheric pressure in calculation.

If question asked for gage pressure then You don't have to use atmoshpheric pressure

so p = p(atm )+pgh

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---