Pls, Help Find the acceleration of the marble using the data below.

V1 = 0.83 m/s

V2 = 1 m/s

T1 = 0.48s

T2 = 1.0s

Acceleration =?

Please tell me the formula you used!

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Which of the following is not am example of a polymer? protein nylon kevlar concreta

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