A piston–cylinder device initially contains 0.048 m^3 of liquid water at 40°C and 200 kPa. Heat is transferred to the water at constant pressure until the entire liquid is vaporized.

a. What is the mass of the water, kg?
b. What is the final temperature, in ℃?
c. What is the enthalpy change during the process, in kJ?
d. Show the process on a T-v diagram.

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.