To model the velocity distribution in the curved inlet section of a wind tunnel, the radius of curvature of the streamlines is expressed as R=LR0/2n. As a first approximation assume the air speed along each streamline is V=20 m/s. Evaluate the pressure change from n=0 to the tunnel wall at n=L/2, if L=150 mm and R0=0.6 m.

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​