3.11 A piston/cylinder arrangement, shown in Fig. P3.11, contains air at 250 kPa, 300°C. The 50-kg piston has a diameter of 0.1 m and initially pushes against the stops. The atmosphere is at 100 kPa and 20°C. The cylinder now cools as heat is transferred to the ambient. FIGURE P3.11 a. At what temperature does the piston begin to move down? b. How far has the piston dropped when the temperature reaches ambient? Po Air 25 c

Elements Of Electromagnetics
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3.11 A piston/cylinder arrangement, shown in Fig. P3.11, contains air at 250 kPa, 300°C.
The 50-kg piston has a diameter of 0.1 m and initially pushes against the stops. The
atmosphere is at 100 kPa and 20°C. The cylinder now cools as heat is transferred to
the ambient.
FIGURE P3.11
a. At what temperature does the piston begin to move down?
b. How far has the piston dropped when the temperature reaches ambient?
8
Po
Air
25 cm
Transcribed Image Text:3.11 A piston/cylinder arrangement, shown in Fig. P3.11, contains air at 250 kPa, 300°C. The 50-kg piston has a diameter of 0.1 m and initially pushes against the stops. The atmosphere is at 100 kPa and 20°C. The cylinder now cools as heat is transferred to the ambient. FIGURE P3.11 a. At what temperature does the piston begin to move down? b. How far has the piston dropped when the temperature reaches ambient? 8 Po Air 25 cm
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