Which of the following statements is not a description of earth's moon? the moon has no atmosphere. the moon has some of the oldest rocks in the solar system. the moon's rotation is the same as its revolution. the moon has the same temperature all around.

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.

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.