After a new aircraft has passed ground and flight tests, the aircraft must receive a series of certificates before it can be mass produced and sold to the public. A Production Certificate :

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

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.