Un calorímetro de cobre tipo lata de 8.6 hg
contiene 0.137 kg de agua y 0.263 hg de
hielo equ...
Physics, 08.12.2020 17:30, hardyfombu
Un calorímetro de cobre tipo lata de 8.6 hg
contiene 0.137 kg de agua y 0.263 hg de
hielo equilibrio térmico presión
atmosférica. a) Si 0.318 kg de plomo a
518.15°K se introducen al calorímetro, ¿cuál
es la temperatura final? Suponga que no hay
perdida de calor a los alrededores. Tome en
cuenta que la temperatura inicial de la
mezcla es de 0°C
Answers: 2
Physics, 22.06.2019 03:30, zahradawkins2007
As part of an industrial process, air as an ideal gas at 10 bar, 400k expands at steady state through a valve to a pressure of 4 bar. the mass flow rate of air is 0.5 kg/s. the air then passes through a heat exchanger where it is cooled to a temperature of 295k with negligible change in pressure. the valve can be modeled as a throttling process, and kinetic and potential energy effects can be neglected. (a) for a control volume enclosing the valve and heat exchanger and enough of the local surroundings that the heat transfer occurs at the ambient temperature of 295 k, determine the rate of entropy production, in kw/k. (b) if the expansion valve were replaced by an adiabatic turbine operating isentropically, what would be the entropy production? compare the results of parts (a) and (b) and discuss.
Answers: 3
Physics, 23.06.2019 07:00, cdjeter12oxoait
Roger pushes a box on a 30° incline. if he applies a force of 60 newtons parallel to the incline and displaces the box 10 meters along the incline, how much work will he do on the box? a. 5.2 × 102 joules b. 6.0 × 102 joules c. -5.2 × 102 joules d. -6.0 × 102 joules
Answers: 3
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