The mass flow rate is given by: PVA Pv D RT RT 4 where P = 101,330 + 10 is the atmospheric pressure in Pa v = 19.9 0.31 is the fluid velocity in m/s T = 300 0.5 is the temperature in K D = 0.104 +0.0005 is the diameter of the circular orifice in m and R is the ideal gas constant and is equal to 287 J/kg/K Calculate the uncertainty in the mass flow rate and give your answer to two decimal points and include the units. The mass flow rate is given by: PvAB RT m= where P= 101,097 10 is the atmospheric pressure in Pa v=20.7 0.32 is the fluid velocity in m/s T = 299 0.5 is the temperature in K A = 0.1 0.0005 is the width of the rectangular orifice in m B = 0.101 +0.0005 is the height of the rectangular orifice in m and R is the ideal gas constant and is equal to 287 J/kg/K Calculate the uncertainty in the mass flow rate and give your answer to four decimal points and include the units.