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Derive an expression for the ratio of the total energy transferred from the isothermal surface of a sphere to the interior of the sphere Q/Qo that is valid for Fo o.
refrigerator operates at steady a coefficient of performance of 5.0 within a kitchen at 238c. the refrigerator rejects
Air enters a nozzle at 240 kpa and 400 k with a velocity of 10m/s. it exits at 100kpa. the nozzle adiabatic efficiency is 90%. Delta PE=0, s.s.s.f, uniform velocity at exit and entrance.
Air undergoes an isentropic process from P_1 = 100 kPA and T_1 = 300 K to a final state where the temperature is 700 K. Assuming an ideal gas, find P_2 in kPa using both the ideal gas tables and assuming a constant specific heat ratio at the average ..
pole a whose coordinates are 20 degree n 50 degree e is to be rotated about the axes described below. in each case find
Air exerts a pressure of 900KPa within a 0.45 cubic meter container of fixed volume. It is cooled such that the pressure falls to 3.25bar. The temperature of the air is then measured and was found to be 285C. Determine the mass of the air, the initia..
a carnot heat pump refrigerator operates between -7 and 29 degree c. it has an input power of 3.5kw. determine a the
500kg of air at 35 degrees Celsius dry-bulb and 20 degrees Celsius wet-bulb temperatures is cooled to 13 degrees Celsius dry-bulb and 90% relative humidity. Decide the amount of heat transfer from the air in MJ
Figure provides steady-state operating data for a well-insulated device with air entering at one location and exiting at another with a mass flow rate of 10 kg/s. Assuming ideal gas behavior and negligible potential energy effects, determine (a) t..
What is the transducer sensitivity? Give units.
a cylindrical tank of methanol has a mass of 40 kg and a volume of 51 l. determine the methanols weight density and
an insualed piston-cylinder device contains 5 kg of satured mix of water initially at 100kpa and 6m3. now 3917kj of
Effective Matching of Surface Roughness, Concerning the effective matching of surface roughness using a lathe, I have been asked to quantify Ra = C1* s^C2 v^C3 Re^C4
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