Which option is the most accurate description of speed? a. the ball rolled down the hill in five seconds to reach the marker. b. the ball rolled down the five meter hill in five seconds. c. it took five seconds for the ball to be displaced five meters from the marker. d. it took five seconds for the ball to be displaced five meters north from the marker.

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

What happens when a rubber rod is rubbed with a piece of fur?

Find the mass by adding the numbers from the three sliders