consider a flow syisem with a heating element hat is used to heat a proces, fhiid. The flow rate of the process fluibl is controiled by a value and the temperature of the procoss flivd is contiolled by a seporate tempetatune controller and m aintain a temperature of 50C mass flowrate of 1kg/s heat capaciry of 4.18kJ/kg 500w/m2k Area =0.1m2 a. mathematical model b. transfer function (1st order ) c. step response from ow-100w