Engineering, 27.02.2020 17:14 boo3972
Water is being heated in a closed pan on top of a range whilebeing stirred by a paddle wheel. During the process 30kJ of heat istransferred to the water and 5kJ of heat is lost to the surroundingair. The paddle wheel works amounts to 500 N*m. The initialinternal energy of the system is 10kJ. Determine the final internalenergy (kJ) of the system.
Answers: 3
Engineering, 04.07.2019 19:10
The proportional limit is always greater than the yield strength for a material. a)-trune b)- false
Answers: 3
Engineering, 04.07.2019 19:20
Air at a pressure of 1atm and a temperature of 40 c is in parallel flow over the top surface of a flat plate that is heated to a uniform temperature of 120 c. the plate has a length of 0.40m (in the flow direction) and a width of 0.15m. the reynolds number based on the plate length is 50, 000. what is the rate of heat transfer from the plate to the air? if the free stream velocity of the air is doubled and the pressure is increased to 10 atm what is the rate of heat transfer?
Answers: 2
Engineering, 06.07.2019 02:30
1in2 processor chip can be modelled as an isothermal plane wall of silicon, isothermal on both sides. the power input to the bottom of the plane wall, or the processing power of the chip, often called the thermal design power (tdp), is 100w. assume the periphery is adiabatic. the silicon is 400 microns thick. the temperature at the junction, or in this case on the bottom of the isothermal plane wall, is 85°c. what is the top surface temperature, assuming that the only mode of heat transfer is conduction
Answers: 1
Engineering, 06.07.2019 03:30
The load on a bolt consists of an axial pull of 10 kn together with a transverse shear force of 5 kn. the bolt material has a yield strength of syt syc 100 mpa. find the diameter of the bolt at factor of safety n-0.5, n 1 and n-2 using maximum shear stress theory
Answers: 3
Water is being heated in a closed pan on top of a range whilebeing stirred by a paddle wheel. During...
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