The paddle wheel in Fig. 3.51 requires 0.8 N m of torque to rotate at 200 rpm.

The paddle wheel in Fig. 3.51 requires 0.8 N ˆ™ m of torque to rotate at 200 rpm. If it rotates for 40 minutes, determine the final temperature of the 0.4 kg of nitrogen contained in the insulated volume, initially at 25°C and 200 kPa. The frictionless piston maintains a constant pressure. Assume constant specific heats.
Figure 3.51

Transcribed Image Text:

Piston 7, P, 25°C 200 kPa 0.4 kg Nitrogen