Determine the density of the liquid in which the pressure is 109.76 hPa at a depth of 1.4 m.

Given: h (depth at which the fluid creates a given pressure) = 1.4 m; P (pressure) = 109.76 hPa (109.76 * 102 Pa).

Reference data: by condition we take g (acceleration of gravity) = 9.8 N / m.

The density of the liquid can be determined from the formula for calculating the hydrostatic pressure: P = ρl * g * h, whence ρl = P / (g * h).

Calculation: ρzh = 109.76 * 102 / (9.8 * 1.4) = 800 kg / m3.

Answer: The calculated density of the liquid is 800 kg / m3.