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////
//Variable Declaration Part a
vi = 20.0 //Initial volume of ideal gas, L
vf = 85.0 //final volume of ideal gas, L
Pext = 2.5 //External Pressure against which work is done, bar
//Calculations
w = -Pext*1e5*(vf-vi)*1e-3
//Results
printf("\n Part a: Work done in expansion is %6.1f kJ",w/1000)
//Variable Declaration Part b
ri = 1.00 //Initial diameter of bubble, cm
rf = 3.25 //final diameter of bubble, cm
sigm = 71.99 //Surface tension, N/m
//Calculations
w = -2*sigm*4*%pi*(rf**2-ri**2)*1e-4
//Results
printf("\n Part b: Work done in expansion of bubble is %4.2f J",w)
//Variable Declaration Part c
i = 3.20 //Current through heating coil, A
v = 14.5 //fVoltage applied across coil, volts
t = 30.0 //time for which current is applied,s
////Calculations
w = v*i*t
//Results
printf("\n Part c: Work done in paasing the cuurent through coil is %4.2f kJ",w/1000)
//Variable Declaration Part d
k = 100.0 //Constant in F = -kx, N/cm
dl = -0.15 //stretch , cm
////Calculations
w = -k*(dl**2-0)/2
//Results
printf("\n Part d: Work done stretching th fiber is %4.2f J",w)
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