Air, considered an ideal gas, is contained in an insulated piston-cylinder assembly outfitted with a paddle wheel. It is initial
ly at p1 = 10 psi, T1 = 600°F, V1 = 1 ft. The paddle wheel transfers 3 Btu (by work) to the air to a final state of P2 = 5 psi, V2 = 3 ft. You may neglect potential and kinetic energy changes. Mair = 28.97 lbm/bmol. Find the mass of air in the closed chamber [lbm), the temperature at state 2 [OR], and the work done by the air to the piston (Btu).
Answer: Visible light makes up just a small part of the full electromagnetic spectrum. Electromagnetic waves with shorter wavelengths and higher frequencies include ultraviolet light, X-rays, and gamma rays.