Aboulder with a mass of 2,500 kg on a ledge 200 m above the ground falls. estimate the speed of the boulder just before it hits the ground.

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Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt