What is the potential energy of a 20-kg rock perched at the top of a cliff with a height of 100 meters? A. 2,000 J B. 200,000 J C. 0.2 J D. 19,600 J

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.

Failure to accomplish erikson’s psychosocial task of late adulthood leads to despair. a. true b. false

While preforming an experiment involving a reaction between two chemicals the scientist observes that the reaction container has become warm the observation is an example of