(Answered) 1 a car with tires pressurized to 240 kpa 35 lbin2 leaves

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1. A car with tires pressurized to 240 kPa (35 lb=in2) leaves Phoenix with the tire temperature at 50-C. Estimate the tire pressure (in kPa and lb=in2) when the car arrives in Alaska with a tire temperature of 230-C.

2. Estimate the mass and weight of the air contained in a classroom where Thermodynamics is taught. Assume the dimensions to be 3.2 m · 8 m · 20 m.

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