+25 instant points+

guys so in engineering ive been struggling a lot.

how do you find sin cos and

does anyone know about scalars and vectors.

my teacher wont pass this concept and im stuggling. my friends almost immediantly understood everything while i havent even started.

reccomend me videos.

is there a formula to solve like ive heard my teacher say suc a toe sumthing

. i have a test

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.