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An insulated piston-cylinder device initially contains 0.3 m3 of carbon dioxide at 200 kPa and 27 oC. An electric switch is turned on, and a 110-V source supplies current to a resistance heater inside the cylinder for a period of 10 min. The pressure is held constant during the process, while the volume is doubled. Determine the current that passes through the resistance heater. (C&B) T2 = 600 K and I = 4.71 amp
One mole of an ideal gas at T = 25 °C is held in a cylinder by a piston at a pressure of 1 x 107 N m-2. The piston pressure is released in three stages,, first to 5 x 106 N m-2, thento1x106 Nm-2,andthento1x105 Nm-2. Calculate the work done by the gas during these irreversible, isothermal expansions. Compare this result to work done in a quasi-static (reversible), isothermal expansion from 1 x 107 N m-2 to 1 x 105 N m-2 at T = 25°C. W=5452JandWrev =11409.6J.
create a presentation that takes you 12 mins to 14 mins to explain the topic iskosher and halal versus genetically
what is the specific volume, internal energy (kj/kg) and enthalpy (kj/kg) for water at 1.8 mpa and 120 Degrees C? Locate the state on p-v diagram and document assumptions.
a balloon behaves so the pressure is p c2v13 c2 100 kpam. the balloon is blown up with air from a starting volume of
A satellite is in Earth orbit with an altitude at perigee of 555.0 km and an altitude at apogee of 1200.0 km. a. What is the semi-major axis of the orbit? b. What is the eccentricity? c. If the true anomaly is 160 degrees, what is the satellite's ..
Also, compare with the efficiency of an Otto cycle operating with the same maximum pressure.
as shown in the ?gure a bar is supported by two springs and a damper. the bars left end is free to move vertically and
finite element analysis fea is a modern-day tool in the analysis of structural mechanics fluid dynamics and heat
consider a metal that is subjected to cold working by rolling it to a lesser thickness or hammering it. a would you
find a) velocity distribution in the film b) shear stress distribution c) volumetric rate of flow d) average velocity. assume the flow is steady and laminar.
An Industrial water shutoff valve is designed to operate with 40lbs of force and will encounter 150lbs of resistance force applied to a 2in diameter axle. What is the required actual mechanical advantage of the system?
you are working in a company that has developed a process to produce dna vaccines from e.coli. after the fermentation
a 15-hp shaft pump is used to raise water to a 45-m higher elevation.if the mechanical efficiency of the pump is 82
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