Which of the following will change the value of an equilibri…

Which of the following will change the value of an equilibrium constant? A. changing temperature B. adding other substances that do not react with any of the species involved in the equilibrium C. varying the initial concentration of reactants D. varying the initial concentration of products E. changing the volume of the reaction vessel  

Bill and his daughter Susan are both standing on identical s…

Bill and his daughter Susan are both standing on identical skateboards (with really good frictionless ball bearings), initially at rest. Bill weighs three times as much as Susan. Bill pushes horizontally on Susan’s back, causing Susan to start moving away from Bill. Just after Bill stops pushing,

You and your friend want to go to the top of the Eiffel Towe…

You and your friend want to go to the top of the Eiffel Tower. Your friend takes the elevator straight up. You decide to walk up the spiral stairway, taking longer time and moving through longer distance to do so. Compare the gravitational potential energy (U) of you and your friend, after you both reach the top.