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Determine the temperature (oC) and the total enthalpy (kJ) when the heating is completed. Sketch the P-v diagram to show the process.
The rope holding the load is cut. a) How will the load move relative to the earth, when the rope is cut? b) How long does it take for the dropping load to reach the earth?
Show that this function satisfies the requirements of a probability distribution function. Calculate the expected (mean) value of x.
Write down expressions for the normal strain and the true strain for the following situation: in a tensile test where the length of the specimen increases from L0 TO L.
Show that the true strain for the over all elongation l0 to l2 is given by sum of the true strian for each of the two separate process. is the same true for the normal strain?
Determine the amount of CO2 emission per year that is saved by the use of the wind turbines for replacement of coal-fired power plants.
Determine the phase or phases in a system consisting of H2O at the following conditions and sketch both the p-v and T-v diagrams showing the location of each state.
Find the decay constant of cesium-137, half-life 30.2 y; then calculate the activity in becquerels and curies for a sample containing 3 1019 atoms.
1 kg of propane is contained in a piston - cylinder assembly at a constant pressure of .20 MPA heat transfer slowly to the propane. Determine the intial and final temperature of the propan, the work
Calculate the work done on the atmosphere for each step and overall. How much work is transferred to the shaft in each step and overall?
A light globe dissipates 200W as heat. It is exposed to a light breeze of air at 20C, which results in a convective heat transfer coecient of 5(W/(m^2*K)).
In each case, calculate the Biot number for the object and indicate whether or not the lumped approximation is valid.
The system undergoes a polytropic process with pV1.2 = const. to a final pressure of 150 kPa. Determine the specific work required to go from the initial state to the final state. What phase is the
Find the pressure inside the cylinder due to the piston and the ambient air. Find the energy transfer from the system by work
An oven has five radiant heaters; each one is rated at 15 kW. It should heat some 2-kg steel plates from 20 degrees CELCIUS to 800 KELVIN. How many of these plates per minute can it heat?
At resonance the amplitude is measured to be 0.58 cm. At 0.80 resonant frequency, the amplitude is measured to be 0.46 cm. Determine the damping factor of the system.
Determine the phase or phases in a system consisting of H2O at the following conditions, sketch p-v and T-v diagrams showing the location of each state and determine the specified property at at the
Was this person napping in the nut pile the day God was cracking nuts? Evaluate this suggestion, assuming the copper surface temperature is 150'C, the rubber is 5-mm thick.
For each sketch, keep the direction vector within one unit cell, using the fact that the direction does not change when all vector coordinates are multiplied or divided by the same factor.
Determine the time needed for the rod temperature to experience 95% of its maximum temperature change. Neglect change in the dimensions of the SMA rod when calculating thermal response of rod.
The pressure ratio is 6, and air leaves the combustion chamber at 1100 K. Determine the cycle thermal efficiency if an ideal regenerator is employed
List the compressibility factors for Air, Nitrogen, Oxygen, Carbon dioxide, Argon, and water at 300 K and 100 kPa. Also, list beside each species whether they can be assumed to be an ideal gas at t
What is the work required using the saturated liquid approximation? What is the work required using the compressed liquid tables? What is the work required if you use the mechanical energy equation?
Can the final equilibrium state be determined? How many independent properties are needed to fix a state? What is the first law for the process described above?