Water is being split to form two new substances hydrogen and oxygen is this a change of state?

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.

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost