HW $3$ On$-$Paper Assignment

# $25$

A freely$-$moving $($hint: this means something important about on$)$ piston$-$

cylinder device contains water of initially a volume of $0\mathrm{.}4734m^3$ and $600$

kPa $.$ Heat is transferred until the water reaches

C$.$ The mass of the water is

kg$.$ You must

interpolate for this problem$-$if you didn't interpolate then you missed something!

a$)$ What is the phase of state $1?$

b$)$ What is the phase of state $2?$

c$)$ What is T$1?$

d$)$ What is the specific internal energy, u $1$ in $k\frac{J}{k}g?$

e$)$ What is the specific internal energy, $u2$ in $k\frac{J}{k}g?$

f$)$ Find the change in specific internal energy $($u$2-$u$1)$ in $k\frac{J}{k}g.$

g$)$ Find the change in internal energy $($U$2-$U$1)$ in kJ$.$

h$)$ Find V$2$ in $m^3.$ Does the volume increase or decrease and why?

i$)$ Draw and label the two states on a P$-$V diagram and the process path with an arrow connecting the

two.

j$)$ Draw and label a P$-$T diagram with states $1$ and $2$ and an arrow connecting them showing the process

path.