How much pressure is exerted at the base of a column of water that is two feet tall?

The pressure exerted at the base of a column of water is determined using the hydrostatic pressure formula:

Pressure (psi) = height (ft) × 0.433 (psi/ft).

In this case, the height of the water column is two feet. Therefore, you can calculate the pressure as follows:

Pressure = 2 ft × 0.433 psi/ft = 0.866 psi.

Rounding this value to two decimal places, it simplifies to approximately 0.86 psi. This calculation aligns with the principles of fluid mechanics, specifically how hydrostatic pressure works in relation to the height of the fluid column. The derived pressure represents the force exerted on the area at the base of the column due to the weight of the water above it.

In the context of the other options, they either reflect incorrect calculations or misunderstandings regarding the relationship between height and pressure in a fluid column.