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Water flows 2m deep at 2m/s in a rectangular channel. Find the change in depth and in water surface elevation caused by a smooth rise in bed level of 0.3 m.
A round bar of C14500 copper, 15mm in diameter and 250mm long is inside the aluminum tube. Compute the total allowable static compressive load on the combined section.
This means that the crystal structure of a Cu-Ni alloy consists of Ni atoms substituting for Cu atoms in the regular atomic positions of the FCC structure. For a Cu-30% wt.% Ni alloy, what fraction
The steam is compressed at constant pressure until its temperature rises to 250 C. What the work done during this compression process is?
Determine the dimensions of the lowest cost container considering the provided environmental factors. Consider the following when making the determination: - ideal gas law -compressability Z chart -
The isentropic efficiencies for the turbine and pump are 85% and 90% respectively. Using SI units, compute the max. work per unit mass of the turbine.
Determine the exit temperature and the power input assuming that the air is (a) an ideal gas with constant specific heats and (b) an ideal gas with variable specific heats.
The diameter of the duct is 24 cm and heat is transferred to the air in the duct from the surroundings at a rate of 2 kW. Determine (a) the velocity of the air at the duct inlet and (b) the temperat
Determine the amount of heat loss through the glass over a period of 5 h. what would your answer be if the glass were 1 cm thick?
The 10-kg sphere C is released from rest when theta=0 and the tension in the spring is 100 N. Determine the speed of the sphere at the instant theta=90°.
If the average convection heat transfer coefficient is 55 W/m2.K, determine the rate of heat transfer from the air to the plate, in kW.
The inner and outer glasses of a 1.2-m x 1.2-m double pane window are at 150C and 90C, respectively. If the 6-mm space between the two glasses is filled with still air.
Disregarding any heat transfer by radiation; determine the convection heat transfer coefficient for heat transfer between the outer surfaces of the wire and the air in the room.
If this air conditioning system draws 5 kw of power when operating determine the maximum rate of removal of heat from the house that it can provide.
During a certain process, 20 KJ/Kg of work is done on the system and the internal energy increased by 40 KJ/Kg. Does the system transfer or gain to surroundings or by surroundings?
If the spar has a cross sectional area of 10 mm x 20 mm, how many hours will the spar last based on the data in the graph provided?
If the melting temperature for some alloy is 750oC, at what temperature (in oC) do you expect creep deformation to become important?
Find the q values and plot the feed lines. a) Feed is 60% ethanol and flashes in the column with v/f=0.37 b)Feed is 40% ethanol and is a two-phase mixture with liquid and vapor in equilibrium at a t
A shaft is subjected to a maximum load of 10 kN. It is designed to withstand a load of 15 kN. What is the standard deviation acceptable in the shaft strength, assuming a normal distribution?
Determine the compression of each spring when the car is momentarily brought to rest. The train is moving to the left.
Determine how long it will take for the refrigerator to cool them. Assume the cans can be treated as a pure substance whose specific heat is .42 Btu/lb °F.
Estimate the electrical power input required to operate the device at these conditions. You can assume steady state and steady flow (SSSF).
Determine: a) the mass flow rate of saturated liquid and saturated vapor leaving the tank in lbm/h; b) the velocity of saturated liquid and saturated vapor flow leaving the tank in ft/s.
Neglecting the changes in kinetic and potential energies, determine the mass flow rate required for a power output of 5 MW.