The sun can be treated as a blackbody at 5780 K. Using an appropriate software, calculate and plot the spectral blackbody emissive power Ebl of the sun versus wavelength in the range of 0.01 to 1000 mm. Discuss the results.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

On a average work day more than work place firs are reorted

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