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a 2.5 kg box is pulled straight to the right with a force of 16n.

since it is sliding horizontally on a surface, what is the normal force (fn) the floor supports it with?

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

0.863333

86%

hope this

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue