An air column at 60"n with ζ-0 initially stretches from the surface to a fixed tropopause at 10 km height. if the air column moves until it is over a mountain barrier 2.5 km high at 45 n, what is its absolute vorticity and relative vorticity as it passes the mountain top assuming that the flow satisfies the barotropic potential vorticity equation

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Two identical 82 mg dust particles very far apart (pee 0) are moving directly toward each other at a speed of 3698 m/s. the charge on each is-719 ? c. determine how close they will get to each other. let k = 9x109 n-m2/c2 & ignore gravity.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?