Moon effect. some people believe that the moon controls their activities. the moon moves from being directly on the opposite side of earth from you to be being directly overhead. assume that the earth-moon (center-to-center) distance is 3.82 108 m and earth's radius is 6.37 106 m. (a) by what percent does the moon's gravitational pull on you increase? % (b) by what percent does your weight (as measured on a scale) decrease? %

What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1