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Determine the normal and frictional driving forces that the partial spiral track exerts on the 200-kg motorcycle at the instant and Neglect the size of the motorcycle. u $ = 0.8 rad>s2
consider a thermodynamic system executing the two reveraible proceses shown in the sketch ab and adb. what is the heat
The truncated nozzle shown in the figure below is used to monitor the mass-flow rate of air in a pipe. The area of the nozzle is 3 cm2. The total pressure and total temperature measured upstream of the nozzle in the pipe are 300kPa absolute and 20°C.
Under the new system the excess power requirements will be met from the grid. Assuming that the cost of electricity is four times that of natural gas, calculate the percentage suing in fuel cost in changing to the new system. 140.4%)
Determine the mean effective pressure of an ideal Otto cycle that uses air as the working fluid; it's state at the beginning of compression is 13 psia and 56°F; it's temperature at the end of combustion is 1,525°F; and it's compression ratio is 11. U..
Steam enters the turbine of a simple vapor power plant with a pressure of 160 bar and a temp of 560 C and expands adiabatically to 0.08 bar
Calculate the percent energy distribution in a steam generator that goes into steam, losses to flue gases, refuse and heat losses. The steam generator receives 480 short tons of coal per day. The heating value of coal is 13,000 BtU/lb",. 375,000 Ib,j..
refrigerant 134a at 10 bars 38oc flows at 10.0 kgs through a heat exchanger leaving at 9.0 bars and 80oc. it exchanges
a simple wheatstone bridge as shown in fig. 7.10 is used to determine accurately the value of an unknown resistance r1
in figure below a charged particle moves into a region of uniform magnetic field goes through half a circle and then
French physicist Jean-Bernard-Leon Foucault (1819-1868) predicted ´ that a pendulum could be used to prove the rotation of the earth. In 1851, a 67 m pendulum with a 28 kg bob was constructed in Paris (latitude 48? N). Estimate the rate of rotatio..
Determine the time required by a diesel-electric locomotive, which produces a constant drawbar pull of 60,000 lb, to increase the speed of an 1800 ton freight train from 20 mi/hr to 30 mi/hr up to 1-percent grade. Train resistance is 10 lb per ton.
a thermocouple located at the center of a long circular duct with a 10cm diameter has a spherical bead of 2mm diameter.
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