Consider the residential heating, ventilation, and air conditioning (HVAC) system at right. A blower forces air through the main duct with cross-sectional area A = 0.030 m², which feeds four

ceiling registers as shown. The first branch is at point 1, and the second branch is at point 2. Assume the mass flow rate through each ceiling register is 0.036 kg/s. Part A What are the mass flow rates from the blower to point 1, and from point 1 to point 2? [kg/s] Part B Assume the air density is constant at p = 1.2 kg/m³. What is the average air velocity from the blower to point 1, and from point 1 to point 2? [m/s] Part C Assume the air velocity is constant at V= 1.0 m/s. What is the average air density from the blower to point 1, and from point 1 to point 2? [kg/m³]