What liquid should be poured into a glass so that at a liquid column height of 7 cm
September 17, 2021 | education
| What liquid should be poured into a glass so that at a liquid column height of 7 cm, a pressure of 560 Pa is exerted on the bottom of the vessel?
The hydrostatic pressure of a liquid at a depth of 7 cm can be calculated using the formula:
Р = ρ * g * h, where Р is the hydrostatic pressure of the liquid (Р = 560 Pa), ρ is the density of the sought liquid (kg / m³), g is the acceleration of gravity (g = 10 m / s²), h is the height of the column liquid (h = 7 cm = 0.07 m).
Let us express and calculate the density of the liquid:
ρ = P / (g * h) = 560 / (10 * 0.07) = 800 kg / m³.
From the table of liquid densities, you can determine that the desired liquid can be alcohol, kerosene or oil.
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