Assume that one of the cylinders of an automobile engine has a volume of .55L. The engine takes in air at a pressure of 1 atm and a temperature of 35 degrees celcius. Then, the engine compresses it to a volume of .45L at 96 degrees celcius. What is the final pressure of the gas in the system?

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answer; 4 electrons;

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answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.