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One-tenth kilogram of air as an ideal gas with k 5 1.4 executes a Carnot refrigeration cycle, as shown in Fig. 5.16. The isothermal expansion occurs at 2238C with a heat transfer to the air of 3.4 kJ. The isothermal compression occurs at 278C to a final volume of 0.01 m3. Using the results of Prob. 5.80 adapted to the present case, determine
(a) the pressure, in kPa, at each of the four principal states.
(b) the work, in kJ, for each of the four processes.
(c) the coefficient of performance.
A glider w ith mass m = 0.20 kg sits on a frictionless horizontal air truck, connected to a spring w ith force constant K = 5.00 N/m. You pull on the glider, stretching the spring 0.100m, and then release it w ith no initial velocity.
to understand the physics of the o-ring we may need to start formulating the problem in a static equilibrium condition.
A circular shaft is subjected to a torque Ta and a bending moment Ma. Assuming that the diameter of the shaft is d, determine the expressions for the principal stresses and maximum shear stress in terms of Ma, Ta and d.
a certain generating power plant requires 1 mw output. two types of diesel- engine installations are available. one
a hollow metal cube with sides 100mm floats at the interface between a layer of water and a layer of sae 10w oil such
a 80 kg resting person with a constant core temperature near 37 c transfers heat at the resting rate to hisher
Cobalt has a saturation magnetization of 1.4*10^6 A/m, and an atomic volume of 6.7 cm^3/mole. (a) What is the magnetic dipole moment of each cobalt atom in Bohr magnetons? (b) You apply a magnetic field in the easy direction with a coil of 10 turns p..
a gas turbine brayton cycle operates with an intercooler a re-heater and a regenerator. air enters the engine at 14 psi
consider an ideal steam combined reheat and regenerative cycle in which steam enters the high-pressure turbine at 500
A spark-ignition engine has a compression ratio of 7.9, an isentropic compression efficiency of 83.3%, and an isentropic expansion efficiency of 95.9%. At the beginning of the compression the air in the cylinder is at 13 psia and 60 °F. The maximum g..
When a positron and an electron meet, they are both annihilated into pure energy. Calculate how much energy (in MeV) is released in this reaction assuming that each particle is moving at 50% the speed of light. For this question use the classical def..
Two simple pendulums are related as follows. Pendulum A has a length LA and a bob of mass mA; pendulum B has a length LB and a bob of mass If the period of A is twice that of B, What is the relationship between LA and LB?
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