What is the Pounds Per Square Inch (PSI) at the bottom of a tank with a water level of 38.29 feet deep?

To find the pounds per square inch (PSI) at the bottom of a tank given the water depth, you can use the formula:

Pressure (PSI) = Depth (feet) × 0.433

This factor, 0.433, represents the pressure exerted by water in pounds per square inch for each foot of water depth.

Given a water level of 38.29 feet, you would calculate the pressure as follows:

Pressure = 38.29 feet × 0.433 PSI/foot

Calculating that gives you:

Pressure ≈ 16.56 PSI

When rounded to one decimal place, this results in approximately 16.6 PSI.

This pressure reflects the increase in PSI with the depth of water, demonstrating how deeper water exerts more pressure due to the weight of the water above. Thus, the choice of 16.6 PSI corresponds accurately to the calculated pressure at that depth, confirming it as the correct answer.