Air expands adiabatically in a piston-cylinder assembly from an initial state where

p_(1)=100lb(f)/(i)n^(2),v_(1)=3.704ft(3)/(l)b

, and

T_(1)=1000\\\\deg R

, to a final state where

p_(2)=60lb(f)/(i)n^(2)^(2)

The process is polytropic with

n=1.4

. The change in specific internal energy, in

Bt(u)/(l)b

, can be expressed in terms of temperature change as

\\\\Delta U=(0.171)(T_(2)-T_(1))

.\ Determine the final temperature, in

\\\\deg R

.\ Kinetic and potential energy effects can be neglected.\

T_(2)=

Air expands adiabatically in a piston-cylinder assembly from an initial state where p1=100lbf/in.2,v1=3.704ft3/lb, and T1=1000R, to a final state where p2=60lbf/in22 The process is polytropic with n=1.4. The change in specific internal energy, in Btu/lb, can be expressed in terms of temperature change as u=(0.171)(T2T1). Determine the final temperature, in R. Kinetic and potential energy effects can be neglected. T2=R Air expands adiabatically in a piston-cylinder assembly from an initial state where p1=100lbf/in.2,v1=3.704ft3/lb, and T1=1000R, to a final state where p2=60lbf/in22 The process is polytropic with n=1.4. The change in specific internal energy, in Btu/lb, can be expressed in terms of temperature change as u=(0.171)(T2T1). Determine the final temperature, in R. Kinetic and potential energy effects can be neglected. T2=R