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The work and the heat per degree change of temperature for a system executing a non-flow process are given by dW/dt= 80 watt-sec/°C and dQ/dt= cal/°C; respectively.
The pressure is 50 psi. At a point 40 ft away the diameter reduces to 3 in. Calculate the pressure here when the pipe is horizontal and when the pipe is vertical with flow downward.
On an overflow structure of 50 degrees slope the water depth (measured normal to the surface of the structure) is 1.2 m (4 ft) and the streamlines are essentially straight and parallel.
Air is now added to the accumulator until the volume is 1 ft3 and the temperature is 80 oF. How much air has been added to the accumulator?
What is the velocity of the air leaving a diffuser when air enters it at 15 psia, 70 oF with a velocity of 1500 ft/s and leaves at 30 psia, 210oF?
No shaft work is required for this process. How much heat is required per pound-mass of steam passing through the boiler when the outlet temperature is 600oF.
A four-cylinder spark ignition engine has a compression ratio of 8, and each cylinder has a maximum volume of 0.6L. Determine the amount of heat supplied per cylinder (kJ).
Consider a closed system with 0.04kg air in a piston-cylinder. the air is at 100kPa, 0.5m^3/kg. At what temp. Is this process carried out?
What is the specific volume of the air at the inlet? What is the specific volume of the air at the outlet?What is the velocity of the air at the outlet?
Calculate the maximum pressure that the reactor is likely to have to withstand, assuming that there are no side reactions. If you were ordering the reactor why would you specify an even greater pres
A waterfall ride at King's Dominion is 50 m high. The water flows over the top of the falls with a speed of 3 m/s. What is the speed of the water as it approaches the bottom of the falls?
The volume ratio is V2/V1 is 6.22 and the value of R for the nitrogen is 0.0787 Btu/lbm-R. What is the work done by the gas?
Five hundred cubic feet per second of water flow in a rectangular open channel 20 ft wide and 8 ft deep. Calculate the depth of the water in the canal.
A smooth nozzle with a tip diameter of 2 in. terminates a 6 in. waterline. Calculate the mean velocity of efflux from the nozzle when the velocity in the line is 10 ft/s.
A force F causes a carriage to move with rectilinear horizontal motion defined by a constant acceleration of 20ft/sec^2. Find, in magnitude and direction, the bending moment that the carriage exerts o
A propelling wheel transfers 20.5 kJ energy to the stream by work. KE and PE are negligible. Find the transfer of energy through work from the steam to the piston during the process in kJ.
Suppose the welbull parametes for this steel are x= 72.6 ksi, theta=87.5,and b=3.86. What is the mean value of the welbull distribution?
25% of the cables have failed after 12 years and 55% failed after 16 years. If the distribution if normal, what is the mean life expectancy?
A river has a steady speed of 0.461 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point. Intuitively, why does the swim take longer when there is a current?
If the speedboat travels 58.4 km/h, in what direction should it head? Express the direction as a compass bearing with respect to due north.
A police car traveling at 101.7 km/h is traveling west, chasing a motorist traveling at 77.0 km/h. What is the velocity of the motorist relative to the police car?
A ball is tossed from an upper-story window of a building. How long does it take the ball to reach a point 10.0 m below the level of launching?
Find the final mass of nitrogen in the tank and the final temperature of the nitrogen assuming constant specific heats at room temperature for nitrogen.
Find the temperature to which the air is cooled and the thermal loading on both the cooler and heater. Assume that a fan before the cooler absorbs 0.5 kW.