Given the vectors A = 2.00iˆ + 6.00jˆ and B = 3.00iˆ + 2.00jˆ, a) draw the vector sum C = A + B and the vector difference D = A - B. B) Calculate C and D, first in terms of unit vectors and then in terms of polar coordinates, with angles measured with respect to the + x axis.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.