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A fine copper wire(0.07-cm diameter) is initially heated to 175C. The wire is suddenly exposed to an environment at 40C with a heat-transfer coefficient of 60W/(m^2*C).
Determine(a) the wire temperature and (b) the heat loss per unit length(W/m) 10s after the wire is exposed tot he convective enviroment.
a brother and sister are playing in the woods when suddenly the brother realizes that they are separated. the last
assuming that a silver-gold alloy is a random mixture of gold and silver atoms calculate the increase in entropy when
Determine a) the volume of the tank,b)the final temperature and pressure, and c) the internal energychange of the water.
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shape memory alloys are metals that undergo a change in crystaline structure within a relatively narrow temperature
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calculate the pressure drop through the tubes for each selection. Recommend a final design that specidies water-flow rate, tube size, number of tubes, and tube length. Comment on your selection.
a diesel engine uses 54.4 kg of fuel oilh of calorific value 45 mjkg. the thermal efficiency of the engine is 25.
you have a 32 foot beam that is laying on two pointsone ateach end a and b. mass of beam is 900 lbm and gravity is
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