Determine the entropy change
A heater provides 100kJ of energy to the air contained in a 0.2m^3 rigid volume, initially at 400kPa and 40 degrees celsius. Determine the entropy change if the volume is insulated. Take the molecular weight of air as 29g/mol and Cv=20.8J/(mol.K)
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What is meant by 'specific goods'? What is meant by 'specific goods'?
Identify and sketch all the external forces acting on the chair. Because the chair can be represented as a point particle of mass , draw the forces with their tails centered on the black dot in the middle of the chair. Be certain to draw your forc
Find the work needed to isentropically compress 0.5kg of air in a cylinder at 350kPa and 713K to 1.2MPa
What nations are interested in the Arctic Ocean and why?
What effect have these organizations had on reducing tribal poverty and encouraging prosperity?
A cube of ice is taken from the freezer at -8.1°C and placed in a 96 g aluminum calorimeter filled with 319 g of water at room temperature of 20°C. The final situation is observed to be all water at 16°C. What was the mass of the ice c
Design an updateable database for storing customer and sales data. Explain how to deal with the problems of missing data. Explain how to deal with the problems of incorrect phone and name data.
A rifle with a barrel length of 62cm fires a 11g bullet with a horizontal speed of 380m/s . The bullet strikes a block of wood and penetrates to a depth of 14cm. What resistive force (assumed to be constant) does the wood exert on the bullet? How
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What is the difference between direct and indirect democracy? Think about the last time you voted in a government election (in any country, at any level)
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