A3.in. schedule 40 commercial steel pipe (with an actual inside diameter of 3.068 in.) carries 210of sae 40 crankcase oil at the rate of 6.0 gal/min. the oil specific gravity is 0.89, and the absolute viscosity is 6.6×10-7lb s/ft2. calculate the pipe size required to carry the same flowrate at approximately one-half the pressure drop of the 3-in. pipe. both pipes are horizontal.

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length