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the 6800-kg helicopter takes off from rest. Its rotor exerts constant 88.000 N vertical thrust.
(a) What is the helicopter vertical acceleration?
(b) How high does it rise in 2 s?
Water is flowing in a formed, unfinished concrete rectangular channel 3.5 m wide. For a depth of 2.0 m, calculate the normal discharge and the Froude number of the flow. The channel slope is 0.1 percent.
two steel e30000 ksi pipes 1 and 2 are connected at flange b. pipe 1 has an outside diameter of 6.625 in. and a wall
Steam is the working fluid in a simple, ideal Rankine cycle. Saturated vapor enters the turbine at 8 MPa and saturated liquid exits the condenser at a pressure of 8 kPa. The net power output of the cycle is 100 MA.
Determine the equilibrium temperature of the outside surface of the wall - Calculate the Rayleigh number and the Nusselt number.
An ideal Diesel cycle has a maximum operating temperature of T3= 862 C and a cut off ratio of 1.19. The state of the air at the beginning of the compression is P1 = 96 kPa and T1 = 15 C. This cycle is executed in a four-stroke, eight-cylinder engine ..
Determine the mass p of ice per meter which can form on the cable without the maximum allowable tension being exceeded. If additional stretch in the cable is neglected, does the addition of the ice change the cable configuration?
Water, initially a saturated liquid at 100 C, is contained in a piston–cylinder assembly. The water undergoes a process to the corresponding saturated vapor state, during which the piston moves freely in the cylinder. If the change of state is brough..
The saturated unit weight of a soil is 20.1 kN/m3 at a moisture content of 22%. Determine (a) the dry unit weight and (b) the specific gravity of soil solids, Gs.
A Rankine cycle power plant is being developed to operate an irrigation system. In this power plant solar energy will be used to boil a low boiling point fluid within glazed flat plate solar collectors. The working fluid that has been selected is the..
Modify the analysis of Fig to find the velocity v? when the inner cylinder is fixed and the outer cylinder rotates at angular velocity O0. May this solution be added to Eq. (4.146) to represent the flow caused when both inner and outer cylinders r..
Water flowing at a rate of 3.8 kg/s is heated from 38 to 55 C in the tubes of a shell and tube heat exchanger. The shell side is one pass with water flowing at 1.9 kg/s entering at 94 C. The overall heat transfer coefficient is 1420 W/m^2*K. The aver..
The object of this project is to develop the preliminary design of a bench-top laboratory set-up with which to evaluate the performance of a vapor-compression refrigeration system subject to broadly variable thermal inputs and changing ambient con..
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