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Air at 100 kpa and 27°C enters an isentropic compressor at a rate of 100 L/s and leaves at 1000 kpa. Determine the exit temperature and the power input assuming that the air is (a) an ideal gas with constant specific heats and (b) an ideal gas with variable specific heats. Also determine the power input that would be required if the compressor were isothermal.
A cooking pot whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid. If the local atmospheric pressure is 101 kPa, determine the temperature at which the water starts boiling when it is heated.
a vertical hydraulic cylinder has a 125-mm diameter piston with hydraulic fluid inside the cylinder and an ambient
What should the diameter of the nozzle outlet be in inches and what is the mass flow rate of steam through the nozzle in lbm/min?
a piston-cylinder device contains 0.15kg of air initially at 2mpa and 350oc. the air is first expanded isothermally to
a state runs a lottery in which 6 numbers are randomly selected from 40 without replacement. a player chooses 6 numbers
Steady State Thermal analysis can be use to simulate and obtain results to support the design optimization / objectives
consider a roof of a house of thickness l 20 cm thermal conductivity k 1 wm k and emittance of the external surface
which of these two processes will produce the largest amount of work? (You must provide a full explanation for your choice).
the truck is to be towed using two ropes. if the resultant force is to be 950 directed along the positive axis
in a railroad switchyard a 50 ton freight car is sent at 7.4 mih toward a 27 ton car that is moving in the same
Consider just the vertical (y) response of the system when the beam is being stretched. Show that the spring constant, ka, is approximately 70.6 mN/m. What is the steady state amplitude of the vertical response? See Figure A below for an engine..
Calculate the number of vacancies per cubic meter in gold at 900°C. The energy for vacancy formation is 0.98 eV/atom. Furthermore, the density and atomic weight for Au are 18.63 g/cm3 (at 900°C) and 196.9 g/mol, respectively.
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