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An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 100kPa and 17°C and 800kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Accounting for the variation of specific heat of air with temperature, determine (a) the maximum temperatureand pressure that occur during the cycle, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle.
the total cross-sectional area of the inlet to the jet engines is 20 ft2. assume that the flow properties of the air
what is the specific heat of air in US customary units given that its value in SI units is approximately 1 kN.m/kg.K?
Calculate the e?ciency of the furnace if the speci?c heat capacity of the water is cp = 4.2kJ/(kgK) and the zero level of enthalpy is at 0?C! (η = 79.6%)
a positively cambered airfoil with a zero-lift angle of attack of ?3has a lift slope of 0.1 per degree.a. calculate the
Given that an activity's normal time and cost are 10 days and $400 and its crash time and cost are 5 days and $800, what is the activity's slope?
Assuming the pulley is a uniform disk with a mass of 0.31 {rm kg}, find the speed of the block after it has fallen through a height of 0.50 {rm m}.
Assuming that within metal crystals, the atoms can be considered as hard spheres in contact, sketch arrangement of atoms in a (100) plane, a (110) plane and a (111) plane of face-centered cubic structure. Determine the number of atoms contained wi..
the dredger is loading a sand onto a barge.the sand leaves the dredger pipe at 4ft/s with a weight flux of 850 lbs/s. estimate the tension on the mooring line caused by this loading.
an aluminum alloy specimen brought to tensile test had frac12 inch2 cross sectional area. it was tested to fracture and
Two kilograms of air within a piston-cylinder assembly execute a carnot power cycle with maximum and minimum temperatures of 750k and 300k, respectively.
two slender rods of negligible weight are pin-connected at a and attached to the 18-lb block b and the 80-lb block c as
a u manometer reads 20 cm air as operating fluid and a given manometric fluid. a single branch closed tube reads 35 cm
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