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What is the initial energy stored in this inductor? Drive the expressions for the inductor current, i, for t 0. Find the voltage across the inductor at the time of zero.
Find a) velocity distribution in the film b) shear stress distribution c) volumetric rate of flow d) average velocity. assume the flow is steady and laminar.
The revenue per system is estimated to be $70,000 in year 1 and to increse $20,000 per year through year 10. Determine if the project is economically justified using PW analysis and a MARR of 10% pe
3kg of R22 in a piston-cylinder is initially at a pressure of 0.30 MPa and volume of 0.15 m3. The system is then heated by 305 kJ and the piston expands slowly. Determine the final temperature in Ce
All the components are ideal except the turbine which has an actual exit state of sturated vapor at 50 C. Determine the net work kj/kg produced by this power plant and the isentropic efficiency of t
Calculate the heat transfer to the eggs in kj and the entropy gemeration in kj/K of this cooking process if you allow the eggs to boil long enough to reach uniform temperature of 70 C.
A ball of diameter 0.05 m and specific gravity 0.5 is dropped from a height of 1 m into a large pool of water. Considering only drag forces and gravity, determine the maximum depth that the ball rea
The summer temperature reaches 50 degC. The car speed is 560 km/hr. Calculate the power required to overcome skin friction drag on the fin.
Write down the equations expression the conservation of momentum for the components in the x and y directions separately. (b) Solve these equations for the speed V'b and angle Theta'b of ball B. Do
A cyclist is traveling at 8m/s when she encounters a hill with 2% grade (assume the elevation increases by 2' for every 100' of travel). How much energy is required to climb the hill?
It is observed that when a regulation 20 ounce basketball is dropped from a height of 1.3m onto a floor. If it is desired to have the basketball return to its initial elevation, what initial downwar
Show the process on a P-V diagram with respect to the saturation lines and determine (a) the final temperature (b) the work done by the steam and (c) the total heat transferred. Draw the process dia
Determine overall efficiency of the pump-motor unit and the pressure difference between the inlet and the exit of the pump. Draw the process diagram.
Assume the tank is well-insulated, determine the temperature and the mass in the tank when it is filled to 120 psia. Draw the process diagram.
Determine the approximate rate of heat loss from the sphere and the rate at which ice melts in the container. Draw the process diagram.
Sketch the entire process P-V diagram, Obtain an expression for the ratio of the compression-to-expansion work as a function of n and r and Find the value of this ratio for values of n = 1.4 and r =
Refrigerant-134a at 800 kPa and 25 degree C is throttled to a temperature of -20 degree C. Determine the pressure and the internal energy of the refrigerant at the final state. Draw the process dia
Determine the volume flow rate and the density of the gas at the inlet and the volume flow rate at the exit using the ideal gas equation the generalized compressibility charts and the error involved
A heat exchanger is to cool ethylene glycol (cp = 2.56 kJ/kg degree C) flowing at a rate of 3.2 kg/s from 80 degree C to 40 degree C by water that enters at 20 degree C and leaves at 70 degree C.
A piston-cylinder device contains 5 kg of R134a at 800 kPa and 60 C. The refrigerant is now cooled at constant pressure until it reaches 20 C. Determine the amount of heat loss that occurs during th
Determine the effective spring constant of the following sandwich of materials under compressive load. All are uniformly loaded over their 10-cm^2 area.
Air enters the heating section at 100 kPa and 17 C with a volumetric flow rate of 2.5 m3/s. If air leaves the duct at 22 C, determine the heat that was lost from the air to the surroundings in WATTS
Do a regression analysis to find the best fit for the data. What is the significance of coefficient of determination with respect to your regression analysis?
The piston expands slowly while an electric heater in the cylinder draws 10A of current at 120V. Determine the final specific volume of the H2O after the heater has been run for 30 minutes.
The firm's policy is to use a risk premium of 6 percentage points when using the bond-yield-plus-risk-premium method to find the cost of equity. What is cost of equity based on CAPM, DCF, and Bond Y