Parallel flow of atmospheric air over a flat plate of length 3 m is disrupted by an array of stationary rods placed in the flow path over the plate. laboratory measurements of the local convection coefficient at the surface of the plate are made for a prescribed value of and [infinity] . the results are correlated by an expression of the form where has units of w/m2·k and is in meters. evaluate the average convection coefficient for the entire plate and the ratio at the trailing edge.

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.

For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.