The pressure in a natural gas pipeline is measured by the manometer shown in fig. p1–69e with one of the arms open to the atmosphere where the local atmospheric pressure is 14.2 psia. determine the absolute pressure in the pipeline.

Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.