Pressure as a function of depth for a certain liquid is plotted on the graph. What is the density of the liquid? A) 1.76 g/cm³ B) 1.36 g/cm³ C) 0.340 g/cm³ D) 1.70 g/cm³ E) 3.27 g/cm³

Question

Quizplus · Accepted Answer

Density is equal to pressure divided by the product of the acceleration due to gravity (9.8 m/s^2) and the height (depth) in meters, or ρ = P/(g*h). Looking at the graph, we can see that the pressure at a depth of 8 meters is approximately 105 kPa. Plugging in the numbers, we get ρ = 105000/(9.8*8) = 1347.45 g/m^3, which is equivalent to 1.35 g/cm^3, the closest answer choice being B.

Pressure as a Function of Depth for a Certain Liquid