Air flows through a circular duct with a diameter of 8 cm at room temperature. The gauge pressure readings for the total pressure and the static pressure are 200 Pa

and 70 Pa,respectively. Assume that this system is in a room that is at a pressure of 100,000 Pa and a temperature that is 300 K. A. What is the velocity of the air in this 8 cm diameter duct. Give your answer in m/s. B. Furthermore downstream, the diameter of the duct decreases to 4 cm. What is the new velocity of the air when the diameter is 4 cm? Give your answer in m/s.