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a 60-kg skier starts at the top of a 10-meter high slope. at the bottom, she is traveling 10 m/s. how much energy does she lose to friction?

Asample of a gaseous substance changes into a liquid

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.

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?