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Air in a piston-cylinder assembly undergoes a process from state 1, where T1= 300 K, p1= 100 kPa, to state 2 where T2=500 K, p2=650 kPa. Using the ideal gas model for air, determine the change in specific entropy between these states, in kJ/kg*K, if the process occurs
a) without irreversibilities
b) with irreversibilities
at an amusement park there are 200-kg bumper cars a b and c that have riders with masses of 40 kg 60 kg and 35 kg
A rigid vessel of capacity 0.6 m3 contains dry saturated steam at 4.0 bar. The vessel is cooled until the pressure is reduced to 2.0 bar, Calculate; a) the mass of steam in the vessel.
the 2 Mg car increases its speed uniformly from rest to 25 m/s in 30s up the inclined road. determine the maximum power that must be supplied by the engine, which operates with an efficiency of 0.8. also, find the average power supplied by the eng..
a u-tube manometer is closed on the left end and open to the atmosphere on the right end where patm 105 pa. the
lubbok engineering consultants is a firm of professional civil engineers. the firm obtains its jobs by giving
B) Determine the minimum amount of work [kJ ] required to reach this end state. C) If more than the minimum work is actually used, where does this extra energy go? That is what becomes of the extra energy?
What would have been the advantages or disadvantages of Tata collaborating with another automaker on the Tata? Who might it have collaborated with?
two identical 3 in. major-diamter power screws single-threaded with modified square threads are used to raise and lower
a particular house wall consists of three layers and has a surface area of 30 m2. the inside layer is 10 mm thick and
do you think the objects created in the following representation schema are always valid? justify your answers with
If 300 Kg of air is pumped into a previously empty 100 m^3 tank, and the temperature of the air in the tank is 25 deg C, then what is the pressure in the tank in N/m^2?
determine the expressions for attractive and repulsive energies, EA and ER as a functions of r where r is in nm and E is in eV.
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