if you are pushing a box with a force of 200n and there is a force of 7 n on the box due to sliding friction, what is the net force on the box

Idon’t quite understand this problem

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

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z