) Un pitcher lanza una pelota con una rapidez de 41 m/s. Estime la aceleración promedio de la pelota durante el movimiento de lanzamiento. Al lanzar la pelota, el pitcher acelera la pelota a través de un desplazamiento de aproximadamente 3.5 m, desde atrás de su cuerpo hasta el punto donde suelta la pelota

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Diverging mirrors and lenses always produce images