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The water enters the watching machine at atmospheric pressure (100 kPa). A. Assuming all friction losses are negligible, estimate the diameter of the pipe leading from the main line to the machine.
Knowing that when this pendulum in immersed in oil and when given the same initial condition it is found to have a frequency of oscillation of 180 rpm, determine the damping constant for oil.
The cone's base and side form a 90 degree angle on the vertical line shared by both horizontal surfaces. All horizontal sections are circular. Determine the maximum and minimum normal stresses at th
The gas is compressed reversibly to a pressure of 800 kPa. Calculate the work required if the process is: a. Adiabatic b. Isothermal c. Polytropic with n = 1.15
Determine the amount of heat per unit mass entering the boiler. Determine the amount of heat per unit mass leaving the condenser. Find the quality at the entrance to the condenser.
Suppose an identical couple is made from rods of pure lead and pure tin and heated to 175 o C. Draw a similar set of composition profiles. You should refer to the Cu-Ni and Pb-Sn phase diagrams.
What is the flexural strength of this sample in MPa if the load in part (a) is applied? What is I, the moment of inertia, in m4? What is the deflection, y, in mm, at the load given in the problem?
Determine the angular acceleration of the pulley and the tension in the cable connected to the block. The inner radius of the pulley is 150mm and the outer radius is 250mm.
Accounting for variable specific heats determine the final temperature of the mixture, the work required and the entropy change of each constituent in the mixture.
Estimate the outlet temperature of the benzene and the work done by the pump in kW. What assumptions have you made?
What is the temperature of a steam vent on the surface of Antarctica? You can assume that the steam generated by the volcanoes is initially at 1000°C and 300 atm.
5 kg/s of steam at 950 kPa and 650oC, with an enthalpy of 3809.6 kJ/kg and leaves at 50oC and 10 kPa, with an enthalpy of 2592.9 kJ/kg.
If the heat capacity of the cooling water is 4.2 J/mol°C, the inlet temperature is 25°C, and the outlet temperature cannot be greater than 40°C, what is the flow rate of the cooling wate
What is the maximum temperature (i.e., the adiabatic flame temperature) that can be achieved by burning canola oil in a 25:1 air:fuel mass ratio?
There are 3,785 cm3 in a gallon. a. How many kg are in one gallon of canola oil? b. How much energy is released by burning a gallon of canola oil?
100 mol/s of propane enters a turbine at 350 K and 30 bar. It leaves the turbine at 1 bar. You can assume that Cp=9R.
Determine the rate of heat transfer from the stack assuming a) there is no wind and b) the stack is exposed to 20 km/h winds.
Using this expression as well as dR=(R^2/(E*h))dp, derive an expression for R in terms of the inlet radius R0, mu, the flow rate Q, E, tube thickness h, and the axial position within the tube, x.
If I MeV of energy is deposited in an anthracene crystal and 2000 scintillation photons are produced, what is the scintillation efficiency?
Assume constants m=.001kg, Cv=.8, k=1.4, T1=300K, and T3=2000K. Plot work as a function of compression ratio r and determine the r that yields maximum work.
If the turbine has an isentropic efficiency of 60%, determine the work out of the turbine and the exit temperature of the fluid and quality if applicable.
Develop the explicit finite difference formulation for this wall for the case of no heat generation but with the indicated solar flux.
Determine the amount of heat per unit mass leaving the condenser. Find the quality at the entrance to the condenser. Calculate the net work output. Find the thermal efficiency of the cycle.
The superheated water vapor at 50 kPa and 100°C is compressed isentropically in a closed system to 4 MPa. Determine the final temperature of the water and the specific work required, win , in kJ
Determine the mass fractions of alpha and beta phases. Determine the mass fractions of primary alpha and eutectic micro-constituents. Determine the mass fraction of eutectic alpha.