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0.25 kg of red-hot (700 C) coals are taken from the fireplace and left in the middle of a room. The room is 3 m x 4 m x 2.6 meters high. If we treat the room as perfectly insulated, initially at 15 C throughout, and the specific heat of the coals is: c = 2.9 kJ/kg-C and for the air: c = 1.01 kJ/kg-C and ? = 1.25 kg/m3, what will be the final average room temperature once the coals reach the room Temp?
a liquid-vapor mixture of 5kg of water with a quality of 0.75 and a pressure of 5bar is expanded in an isobaric process
a water kettle has 1 kg of saturated liquid water at p0 . it is on an electric stove that heats it from a hot surface
if the critical resolved shear stress for yielding in aluminum is 240kpa. calculate the tensile stress required to cause yielding when the tensile axis is [001]
you are considering two pipes to connect liquid leaving a pump to the entrance to a reactor. for a given mass flowrate
a tank contains a gas at an absolute pressure of 104.0 kpa. the pressure in the tank is measured using a mercury p13.59
find the phase compressed liquid superheated vapor saturated liquid saturated vapor or a mixture of saturated liquid
when the 35-kg cylinder is released from rest the spring is subjected to a tension of 75 n.a determine the speed of the
the diagonal of a long triangular bar 45-45-90 triangle section is well insulated. while sides of equivalent length are
the refrigerant is now heated at constant pressure until its temperature rises to 333k. calculate the work done during this process.
coming out of a factory chimney are the following gases co2 so2 o2 n2 h2o with volume percentage to be 13.5 0.3 5.2 76
a spool of mass m radius r and radius of gyration kg rolls without slipping on an incline whose angle with respect to
a stone is thrown vertically upward from a bridge located 40 m above the water. knowing that it strikes the water 4 s
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