Final answer:
The Pitot tube calculates dynamic pressure in a wind tunnel by using Bernoulli's equation to relate velocity, static pressure, and fluid density. The total pressure is the sum of static and dynamic pressures, calculated from known velocity, temperature, and static pressure values.
Step-by-step explanation:
The question revolves around calculating the pressure measured by a Pitot tube in a low-speed subsonic wind tunnel under specified conditions using Bernoulli's principle. A Pitot tube measures the velocity of fluid by converting the kinetic energy of the flow into potential energy, which can be used to calculate the dynamic pressure of the wind tunnel flow.
Using Bernoulli's equation, we can determine the relationships between velocity, static pressure, dynamic pressure, and fluid density. While the detailed computation isn't provided in the question, to calculate the pressure measured by a Pitot tube, the total pressure (which is the sum of static and dynamic pressures) should be computed based on the given flow conditions, including the velocity, temperature, and static pressure of the air in the wind tunnel.
The calculation involves converting the air velocity from miles per hour to appropriate units compatible with the atmospheric pressure given in pounds per square foot, and then determining the total pressure using Bernoulli's equation related to these properties.