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The load at point bis not allowed to swing more than 4 m horizontally when the crane is brought to a sudden stop. Find the max speed of the crane.
The R-134a enters the valve as saturated liquid at a pressure of 20 bar and exits at 1 bar. For this process determine the temperature at the outlet (°F).
A shock absorber is to be designed to limit its overshoot to 15 percent of its initial displacement when released. Find the damping ratio ε0 required. What will be the overshoot if &epsilon
A crate sliding down a ramp reaches the bottom of the ramp and slides across a flat floor. At an instant after reaching the floor, the crate has a speed of v_1 = 8.50 m/s.
A swimming pool is heated by a gas-fired heater that supplies 200,000 Btu/hr to the water. The pool is rectangular, 15 ft by 30 ft, with an average depth of 5 ft.
A gas contained within a piston-cylinder assembly undergoes three processes in series: Process 1-2: Constant volume from state 1 where p1 = 1 bar, V1 = 4 m3 to state 2, where p2 = 2 bar.
Nickel has a FCC crystal structure and 0.125 nm atomic radius. Draw two nearest parallel (110) planes in a FCC crystal, and calculate their interplanar spacing. Calculate the interplanar spacing for
Air enters a set of these nozzles at 215 psia and 700 degrees F with a velocity of 79 ft/s and exits at 160 psia and 645 degrees F. Calculate the velocity at the exit of the nozzles.
Steam expands isentropically from 2 MPa and 500 K to a final state in which the quality is 0.90. Determine the final state temperature, pressure, and specific volume.
Consider an ocean thermal energy conversion power plant in Hawaii designed to operate between temperature limits of 90°F (ocean surface) and 40°F (deep ocean). Calculate thermal efficiency
The power output of an adiabatic steam turbine is 5.5 MW. At the inlet, P = 2.0 MPa and T = 435 °C. The steam enters the turbine with a velocity of 50 m/s. The elevation of the inlet is 15 m. At
Find the elapsed time to vaporize the propane and total work produced. Also find theoretically maximum possible total work output for the given QCOLD, WREV,MAX.
Find the actual cycle coefficient of performance, the rate of waste heat rejection (kJ/hr) and electrical cost per hour. Repeat/Compare results for COP, waste heat rate (kJ/hr) and operating cost.
A pump steadily draws water through a pipe from a reservoir at a volumetric flow rate of 22 gallons per minute. At the pipe inlet, the pressure is 14.7 psi, the temperature is 68 °F, and the vel
Air at 110 kPa and 250 K is compressed steadily to 570 kPa and 400 K. The mass flow rate of air through the compressor is 0.03 kg/s. A heat loss of 16 kJ/kg occurs during the process.
Consider two reversible refrigerators operating in series. Determine the temperature (°C) of the intermediate reservoir.
Link BC is 6 mm thick and is made of a steel with a 450-MPa ultimate strength in tension. What should be its width w if the structure is being designed to support a 20-kN load P with a factor safet
It is found that ozone reaction in water nearly follows first-order kinetics in ozone concentration decreases by 50% in 12 minutes (t1/2 = 12 min).
A compressor is used to pressurize pure oxygen for respiratory assistance applications. Determine the maximum outlet pressure assuming isentropic compressor
How much work must be done by a Carnot refrigerator to transfer 1.0 J as heat (a) from a reservoir at 1.1°C to one at 28°C, (b) from a reservoir at -74°C to one at 28°C, (c) from a
An electric motor draws a current of 10 amp with a voltage of 110V. The output shaft develops a torque of 10.2 N-m and a rotational speed of 1000 rpm. For steady-state operation, determine the rate
A pump accepts liquid water at 60 °F and 14 psia and compresses it to a pressure of 100 psia. Determine the input power of the pump (hp).
A Balloon is to be filled from a helium tank. The tank is large and the tank pressure remains effectively constant while the balloon is filled. A valve between the tank and the balloon controls the
Water contained in a piston-cylinder assembly, initially at 1.5 bar and a quality of 20% is heated at constant pressure until the piston hits the stops.