A cellphone is accidentally pushed off the roof of a building with some initial velocity in the horizontal direction. Describe the motion of the phone as it is observed by someone standing on the street. Don't forget the horizontal direction and the vertical direction.

When you turn on a battery-operated device, an electrical circuit is

An object has a weight of 500 on earth what is the mass of this object

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.