Consider the flow of air through a convergent–divergent duct, such as the venturi tube described in prob. 4.4. the inlet, throat, and exit areas are 3, 1.5, and 2 m2, respectively. the inlet and exit pressures are 1.02 × 105 and 1.00 × 105 n/m2, respectively. calculate the flow velocity at the throat. assume incompressible flow with standard sea-level density. upload your answer via pdf. show all work for full credit.

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

How are the crust and the inner core alike? a) they are both solid. b) they both have the same temperature. c) they are both under the same pressure. d) they are both very close to the center of the earth.

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and