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The ignition temperature for the gasoline in the motorcycle in problem 44 is 1100 K and the exhaust temperature is 570 K.
(a) What is the Carnot efficiency for an engine operating between these temperatures?
(b) What is the coefficient of utility for the motorcycle engine?
Which of the following equations for the entropy satisfy the postulates of thermodynamics (except the Nernst postulate)?
a-2-m by 1.5-m section of wall of an industrial furnace burning natural gas is not insulated and the temperature at the
You are required to determine the decay curves for radioactive decay of a set of heavy isotopes. The isotope, 234U decays into 230Th with a half-life of 246000 years. The isotope, 230Th decays into 226Rn with a half-life of 75380 years. The isotope, ..
Once flange C is engaged both B and C rotate together, twisting both shafts. What is the maximum shearing stress that occurs in a shaft?
An object whose mass is 300 lb experience changes in its kinetic and potential energies owing to the action of a resultant force R. the work done on the object by the resultant force is 140 Btu. There are no other interactions between the object a..
A gas is contained in a piston of 5 m3 at 100 KPa. Then the gas is compressed till its volume is reduced to 2.5 m3. If there was no exchange of heat from the system during the compression process, calculate the work required for the compression and t..
A conventional coal fired power plant has a thermodynamic efficiency of 30%. If coal burns at 400C, what's the max theoretical efficiency of a coal fired plant.
the average plate temperature of a flat plate of length l with constant heat flux with air at 20?c flowing over it at a
A flying buttress transmits a load P = 25 kN, acting at an angle of 60° to the horizontal, to the top of a vertical buttress AB (see figure). The vertical buttress has height h = 5.0 m
Use the dummy load method to compute the vertical movement of joint C of the truss in Fig. 3.24 from the external loads. Assume linear elastic behavior with all members identical in cross-section with the same modulus of elasticity.
Draw all required free body diagrams and write the shear fimction and moment function for the entire length of the beam shown in Q above. Simplify the expressions by collecting terms. Show all calculations on a separate sheet.
as shown in the figure steam at 1200 psia 825degf enters a turbine operating at steady state with a volumetric flow
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