Two vectors having equal magnitudes a makes angle thetha with each other. find the magnitude and direction of the resultant?

Which changes of state do the labels represent? a: b: c:

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.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island