Final answer:
In physics, the pressure exerted by a fluid is given by the equation P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the height of the fluid column. In this case, the student is asking about the pressure exerted by a vertical foot in a riser. To find this, we need to know the density of the fluid and the acceleration due to gravity.
Step-by-step explanation:
In physics, the pressure exerted by a fluid is given by the equation P = ρgh, where P is the pressure, ρ is the density of the fluid, g is the acceleration due to gravity, and h is the height of the fluid column. In this case, the student is asking about the pressure exerted by a vertical foot in a riser. To find this, we need to know the density of the fluid and the acceleration due to gravity.
Let's assume that the fluid is water, which has a density of approximately 1000 kg/m³. If we convert 1 vertical foot to meters, we get 0.3048 meters.
Using the equation P = ρgh and substituting the values, we get:
P = (1000 kg/m³)(9.8 m/s²)(0.3048 m)
P ≈ 2948 Pa
Therefore, one vertical foot in a riser exerts a pressure of approximately 2948 Pa (pascals) or 0.429 psi (pounds per square inch).