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6.91 A handheld pump for a bicycle (Fig. P6.91) has a volume of 25 cm³ when fully extended. You now press the plunger (piston) in while holding your thumb over the exit hole so that an air pressure of 300 kPa is obtained. The outside atmosphere is at Po, To. Consider two cases: (1) it is done quickly (~1 s), and (2) it is done very slowly (~1 h). a. State the assumptions about the process for each case. b. Find the final volume and temperature for both cases. FIGURE P6.91

6.91 A handheld pump for a bicycle (Fig. P6.91) has a volume of 25 cm³ when fully extended. You now press the plunger (piston) in while holding your thumb over the exit hole so that an air pressure of 300 kPa is obtained. The outside atmosphere is at Po, To. Consider two cases: (1) it is done quickly (~1 s), and (2) it is done very slowly (~1 h). a. State the assumptions about the process for each case. b. Find the final volume and temperature for both cases. FIGURE P6.91

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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6.91 A handheld pump for a bicycle (Fig. P6.91) has a volume of 25 cm³ when fully extended. You now press the plunger (piston) in while holding your thumb over the exit hole so that an air pressure of 300 kPa is obtained. The outside atmosphere is at Po, To. Consider two cases: (1) it is done quickly (~1 s), and (2) it is done very slowly (~1 h). a. State the assumptions about the process for each case. b. Find the final volume and temperature for both cases. FIGURE P6.91
Transcribed Image Text:6.91 A handheld pump for a bicycle (Fig. P6.91) has a volume of 25 cm³ when fully extended. You now press the plunger (piston) in while holding your thumb over the exit hole so that an air pressure of 300 kPa is obtained. The outside atmosphere is at Po, To. Consider two cases: (1) it is done quickly (~1 s), and (2) it is done very slowly (~1 h). a. State the assumptions about the process for each case. b. Find the final volume and temperature for both cases. FIGURE P6.91
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