A42.0-kg parachutist is moving straight downward with a speed of 3.85 m/s. (a) if the parachutist comes to rest with constant acceleration over a distance of 0.750 m, what force does the ground exert on her? (b) if the parachutist comes to rest over a shorter distance, is the force exerted by the ground greater than, less than, or the same as in part (a)? explain.

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

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.

In a good thermo flask the main cause of heat loss is