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1. The ramp is used as passengers board a small com- A muter airplane. The total mass of the ramp and six passengers is 750 kg with mass center at G. Determine the force in the hydraulic cylinder AB and the magnitude of the pin reaction at C.
2. Determine the cutting force F applied by the blade DE to the bar at G in terms of the force P applied to the handle of the heavy-duty cutter. Assume that the cutting force F is perpendicular to the lower edge of the blade DE.
The power output of an ideal, open-cycle gas turbine cycle is 75 MW and its pressure ratio is 16. Air enters the compressor at 520 R and enters the turbine at 2800 R. Using variable specific heats at 1000°F: cp = 0.263 Btu/lbm-R and k = cp/cv = 1.353..
Determine the conditions for delivering maximum torque at starting of a three-phase induction motor.
A 1m3 rocket propellant chamber is filled with combustion gases at 3000 K and 7 Mpa at the instant combustion ceases. The throat area of the nozzle is 0.1m2. Estimate the time it takes for the chamber pressure to drop to 0.7 MPa. Assume that the inst..
a gas turbine power plants operates using methane as fuel and 200 excess air. fuel and air enter the plant at 25
the system is released from rest with no slack in the cable and with the spring unstretched. determine the distanced s
assuming cold air standard assumptions for a spark ignition engine cycle otto and given the following data compression
Determine a symbolic expression for the total thermal resistance of wall, including inside and outside convection effects for prescribed conditions.
the salt flats west of the great salt lake make a great racing surface. a give the chemical formula for the mineral
An enclosure contains an array of circuit boards, 15 cm high and 20 cm long. The clearance between the tips of the components on the PCB and the back surface of the adjacent PCB is 0.3 cm. Each circuit board contains 75 square chips on one side, each..
1.Discuss whether you think OSHA's air contaminant standards are important, and why. Do you think they are adequate to protect employees in the workplace from airborne contaminant hazards? Explain.
An airplane weighing 70000 lb is in a cruise flight (constant altitude, constant velocity, level flight) at an altitude of 30000 ft, with a velocity of 0.5 Mach. Its wing area is 4000 ft2. Given the drag polar of the airplane as CD=CD,0+0.05CL2; CD,0..
An isolated system consists of a closed copper vessel of mass 0.1 kg, containing 1 kg of liquid water, each initially at 5°C, immersed in 20 kg of liquid water, initially at 20°C. The system is allowed to come to equilibrium.
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