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A short aluminium cylinder 2.5 cm in diameter and 5 cm long is initially at a uniform temperature of 100°C. It is suddenly subjected to a convection environment at 50°C and h = 400 W/m2°C. Calculate the temperature at a radial position of 1 cm from outer surface and a distance of 0.5 cm from one end of the cylinder 10 seconds after exposure to the environment.
In each cycle, the change in internal energy of the refrigerant when it leaves the compresser is 1.2×105 . What is the work done by the motor of the compressor?
air at 5 bar and 177oc state 1 is expanded through a turbine to 1 bar and 27oc state2. the mass flow rate of air
If the bar is subjected to centric forces of magnitude P = 30 kN and knowing that EA = 70 GPa and EB = 105 GPa, determine the normal stress (a) in the aluminum layers, (b) in the brass layer.
For the two processes given below, determine the final temperature, pressure, specific volume, and the changes in internal energy, enthalpy, and entropy. Calculate the final temperature and change in specific internal energy as steel at 212 kPa and 5..
Find the concentration of aluminum in a solution that exhibits a rate of 0.76 absorbance units per second under the same experimental conditions.
Air flows isentropic ally through a convergent-divergent passage with inlet area 5.2 cm^2, minimum area 3.2cm^2 and exit area 3.87 cm^2. At the inlet the eir velocity is 100m/s, is 680 kPa, and temperature 345 K.
Can you guess what might have caused the unusual aspect(s) of the histogram?
Write the stress tensors at points Aand B, both of which are on the top (z-facing surface) of the wrench. Hint: you will need to use some results from Chapter 5.
Check your results by first expressing the given transform in partial-fractions form and then inverting using the standard results:
Gas turbine and compressed air systems will serve as prime movers at a very high speed. Discuss the design characteristics of an induction generator for those applications.
a diesel engine has a compression ratio of 20 and a cutoff ratio of 2. air is at 95 kpa and 290 k at the beginning of
a compressor operating adiabatically is to compress 2.83 m3min of air at 29.4 c and 102.7 knm2 to 311.6 knm2. calculate
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