7. An automobile tire contains 3730 cu in. of air at 32 psig and 80°F. (a) What mass of air is in the tire? (b) In operation, the air temperature increases to 145 C.If the tire is inflexible, what is the resulting percentage increase in gage pressure? (c) What mass of the 145 F air must be bled off to reduce the pressure back to its original value?

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.