Ihave a truck traveling forward at 20 m/s and i proceed to shoot a ball horizontally backwards from the back of the truck at 20 m/s. what direction does the ball go?

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.

Why don't you see your reflection in water with waves or repples

In the first law of thermodynamics, triangle e=q-w, what does q stand for