# In the left knee of the communicating vessels, water is poured 1000 kg / m (3), and in the right

In the left knee of the communicating vessels, water is poured 1000 kg / m (3), and in the right one kerosene 8000 kg / m (3). The height of the water column is 15 cm, calculate the height of the kerosene column.

To calculate the value of the height of the column of kerosene in the right knee, we use the ratio: ρwater / ρker = hker / hwater, whence we express: hker = ρwater * hwater / ρker.

Constants and variables: ρwater – water density (according to the condition ρwater = 1000 kg / m3); hwater – the height of the water column (hwater = 15 cm); ρker is the density of kerosene (according to the condition ρker = 800 kg / m3).

Calculation: hker = ρwater * hwater / ρker = 1000 * 15/800 = 18.75 cm.

Answer: The kerosene column is 18.75 cm high.

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