Before embarking on a car trip from Michigan to Florida to escape the winter cold, you inflate the tires of your car to a manufacturer-suggested pressure of 33 psi while the outside temperature is 25 °F and then make sure your valve caps are airtight. You arrive in Florida two days later, and the temperature outside is a pleasant 72 °F.
a) What is the new pressure in your tires, in SI units?
b) If you let air out of the tires to bring the pressure back to the recommended 33 psi, what percentage of the original mass of air in the tires will you release?
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