An open test tube at 25 oC is filled with mercury and water.  The height of mercury is 12.1 cm and the water is 5.6 cm.  Calculate the pressure at the bottom of the test tube (kPa) if the atmospheric pressure is 756 mm Hg.  (Specific gravity of mercury and water are 13.6 and 1.0 respectively)

Question 6 pls. Complete soln and units

A solid block of cast iron weighing 220 kilograms is completely immersed in fresh water, when it appears to weigh 189.5 kilograms. Calculate the specific gravity of the cast iron

What would be the reading of a barometer in inches of mercury corresponding to an atmospheric pressure of 14.2 psia?   A barometer reads 745 mm of mercury. Calculate the barometric pressure reading in kPa(abs).

The total pressure force of a square plate is 25 kN, placed vertically in water so that the center of the plate is 1.5 m below the free surface. Determine the size of the plate and the depth of center of pressure. The above square plate is taken out of the water which weighs 370.5 N in air and 180.3 N in water of specific gravity 0.99. Find the volume and specific gravity of the square plate. Draw a neat sketch.

The liquid column height of a barometer is h = 733.74 mm, and the specific weight of the liquid is γ = 13.30 kN/m3. Calculate the atmospheric pressure, Patm____kPa

Hello. Our instructor solved this question and subtracted the product of water's height and specific weight from the P1 pressure, as well as oil's. He didn't factor air pressure into the equation. What is the reason why we do not use open air pressure to solve the problem?

A vacuum gage connected to a chamber reads 29.61 kPa at a location where the barometric pressure is 99.78 kPa. Compute the absolute pressure in the chamber in inches of mercury.