The paddle wheel in Fig. 3.50 requires 0.8 N m of torque to rotate at 200 rpm.

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The paddle wheel in Fig. 3.50 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 10 kg of nitrogen contained in the insulated rigid volume, initially at 25°C and 200 kPa. Assume constant specific heats.
Figure 3.50
The paddle wheel in Fig. 3.50 requires 0.8 N ˆ™
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Thermodynamics for Engineers

ISBN: ?978-1133112860

1st edition

Authors: Kenneth A. Kroos, Merle C. Potter

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