Engineering, 18.03.2021 14:00 paatnguyyen
Two 800kg cars moving at 90km/h have a head on collision. Both cars came to complete rest after crash. Assuming all kinetic energy of cars is converted into thermal energy. Find average temperature rise in reamins of cars. The average heat capacity of cars is 0.45 kJ/kg. C
Answers: 1
Engineering, 04.07.2019 18:10
The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false
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Engineering, 04.07.2019 18:10
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
Answers: 1
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
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Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
Answers: 3
Two 800kg cars moving at 90km/h have a head on collision. Both cars came to complete rest after cras...
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