1.The velocity varies linearly with time throughout the nozzle. the velocity at the base is 1t and at the tip is 4t. what is the local acceleration midway along the nozzle when t=2s? What is the convective and centripetal acceleration with L=1.5ft?
2.A gravity thickener receives 33.000 Lpd of wastewater sludge and increases the solids content from 3.0% to 7.0% with 90% solids recovery. Calculate the volume of thickened sludge.
3.The compound bar carries the axial forces P and 2P. Find the maximum allowable value of P if the working stresses are 40 ksi for steel and 20 ksi for aluminum, and the total elongation of the bar is not to exceed 0.2 in.