2. Filtration: The following data were obtained in a constant-pressure filtration unit for the filtration of a yeast suspension. t (min) V (L filtrate) 4 20 48 76 120 115 365 680 850 1130 Characteristics of the filter are as follows: A = 0.28 m²; po =1920 kg/m³; 2.9 x 10-3 kg/m-s; a = 4 m/kg a) Determine the pressure drop across the filter with units of N/m² b) Determine the filter medium resistance (Rm).