Athermally conducting, uniform and homogeneous bar of length l, cross section a, densityp and specific heat at constant press ure c is brought to a nonuniform temperature distribution by contact at one end with a 1054 hot cold reservoir temperature te. the bar is removed from the reservoirs, thermally insulated and kept at constant pressure. show that the change in entropy reservoir at a emperature th and at the other end with a at a of the bar is 99006 th tc in tc 1+in ti th te in th th t as = cp ediemyom where cp cppal, t (th + te)/2 ok0 -

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

Identify the type of synthetic material used in each object

In a wind tunnel the speed changes as the cross sectional area of the tunnel changes. if the speed in a 6' x 6' square test section is 100 mph, what was the speed upstream of the test section where the tunnel measured 20' x 20'? use conservation of mass and assume incompressible flow. conservation of mass requires that as the flow moves through a path or a duct the product of the density, velocity and cross sectional area must remain constant; i.e., that ova-constant. a model is being tested in a wind tunnel at a speed of 100 mph if the flow in the test section is at sea level standard conditions, what is the pressure at the model's stagnation point? (a) the tunnel speed is being measured by a pitot-static tube connected to a u- tube manometer. what is the reading on that manometer in inches of water? (b) at one point on the model a pressure of 2058 psf is measured. what is the local airspeed at that point?