The Alaska Pipeline has a design flow rate of 4.4E7 gallons per day of crude oil at 60°C. For crude oil at 60°C, take rho = 860 kg/m3 and μ = 0.004 kg/m-s. For galvanized iron, take ε = 0.0005 ft. For the given flow, take f ≈ 0.0149. The single pipe is 48 in (1.22 m) in diameter and is capable of carrying up to two million barrels (333,000 m3 ) of oil per day, on a trip that takes almost six day. Assuming a galvanized-iron wall, estimate the total pressure drop required for the 820-mile trip.

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?