Write a function rand_complex(n) that returns a list of n random complex numbers uniformly distributed in the unit circle (i. e. the magnitudes of the numbers are all between 0 and 1). Give the function a docstring. Demonstrate the function by making a list of 25 complex numbers.

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater