The height of the water in the vessels relative to the connecting tube is 30 cm. What pressure does this column of water produce?

Given:

h = 30 centimeters – the height of the water column in the vessels;

ro = 1000 kilograms per cubic meter – the density of water;

g = 10 Newton / kilogram – acceleration of gravity (constant value near the earth’s surface).

It is required to determine P (Pascal) – the pressure of the water column.

Let’s convert the units of measurement of length from centimeters to meters:

h = 30 cm = 30 * 10-2 = 0.3 meters.

To determine the pressure of a column of water, use the following formula:

P = ro * g * h = 1000 * 10 * 0.3 = 1000 * 3 = 3000 Pascal (3 kPa).

Answer: the pressure of the water column is 3 kPa.