Problem 6: The density of a fluid is given by the empirical equation p = 90 exp(7.5 x 10-7P) where p is density (Ibm/ft) and P is pressure (Ibein) a) What are the units of 90 and 7.5x10 ?? b) Calculate the density in g/cm for pressure of 9.00 x10 N/m2 c) Derive a formula for p (g/cm') as a function of P (N/m?). Check your result using the solution of part b