# Question: a springloaded pistoncylinder device is initially filled with 013 lbm...

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A spring-loaded piston-cylinder device is initially filled with 0.13 lbm of an R-134a liquid-vapor mixture whose temperature is -30 ℉ and whose quality is 80 percent. The spring constant in the spring force relation F = kx is 37 lbf/in, and the piston diameter is 12 in. The R-134a undergoes a process that increases its volume by 50 percent. Calculate the final pressure and the final specific volume of the R-134a. (You may need to use the Table A-11E)