You are presented with three identical-appearing materials in the form of a 13 mm by 50 mm cylinder. However, each material is a different type-a
metal, ceramic, and a polymer. Describe how you might identify each
specific material using only your senses, a beaker of water and ice, a
beaker of boiling water, a multimeter, and a small pocket knife.

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