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Determine the energy loss due to a gradual enlargement from a 25 mm OD x 2.0 mm wall copper hydraulic tube to a 80 mm OD x 2.8 mm wall tube when the velocity of flow is 3 m/s in the smaller tube and the cone angle of the enlargement is 20°.
Consider the Samuelson model with one good and no production and in which consumers are endowed with one unit of good in youth and none in old age and where their utility functions are u(x0 , x1) = log x0 + (0.5) log x1.
estimate the wavelength corresponding to maximum emission from each of the following surfaces the sun a tungsten
A two-dimensional reducing bend as shown is used to control flow rate and direction of flow in a home air conditioning duct. In the reducing bend shown, there is a linear velocity profile at section (1). The flow is uniform at sections (2) and (3). T..
Two torsional springs, M = ku, are used to assist in opening and closing the hood of this truck. Assuming the springs are uncoiled (u = 0°) when the hood is opened, determine the stiffness k (N # m>rad) of each spring so that the hood ..
A perfect gas (methane) undergoes a reversible polytropic process in which the polytrotic exponent is 1.4. 1) Using the first law, arrive at an expression for heat transfer per unit mass solely as a function of the temperature difference (change in T..
a vehicle is powered by motors that have a maximum speed of 5000 rpm. each motor is coupled to the wheel using a gear
create a seven by seven matrix with random numbbers between 1 and 70. outpput a vector of the difference between the
refrigerant r-134a with a mass of 0.08 kg is expanded adiabatically from a superheated vapor at 10 bar 40 c to a
A well-insulated tank in a vapor power plant operates at steady state. Water enters at inlet 1 at a rate of 125lb/s at 14.7lbf/in^2. Make up water to replenish steam losses from the plant enters at inlet 2 at a rate of 10 lb/s at 14.7 lbf/in^2 and 60..
A rigid tank A of volume 0.6 m^3 contains 3 kg of water at 120 degrees C, and rigid tank B has a volume of 0.4 m^3 with water at 600kPa and 200 degrees C. The tanks are connected to a piston/cylinder initially empty with closed valves.
Consider a 2500 psia/1000 F turbine inlet, single reheat to 1000 F cycle with a reheat pressure ratio of P2/P1= 0.2 and a steam mass flow rate of 2 x 10^6 ibm/hr. The condensor operates at a pressure of 1 psia. Pump and turbine isentropic efficiencie..
an ideal gas of mass 2 kg is contained within a rigid cylinder and undergoes a cycle which consists of three separate
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