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Physics, 22.06.2019 16:30
The air in an automobile tire with a volume of 2.60 ft3 is at 70Β°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ftβ
lbflbmβ
r(1 psia144 lbf/ft2) = 0.3704 psiaβ
ft3lbmβ
r the amount of air that must be added to raise the pressure is lbm
Answers: 3
Physics, 22.06.2019 22:00
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What practical value did astronomy offer to ancient civilizations?
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In the absence of friction, gravity, and all other external forces, what kind of speed will an object display if it travels from the bottom to the top of an inclined plane? a. constant speed b. increasing speed c. decreasing speed d. speed increases and then decreases e. speed decreases and then increases
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2. When things happen the force is said to be ββββ....
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