Consider the following situations: I) A pitcher throws a fast ball; II) A pencil rests on your desk; III) A car hits a tree; IV) The wind pushes a sailboat. In which situation(s) do(es) a pair of equal forces acting in opposite directions exist

Explanation:

Applications of newton's third law of motions proves the validity of all the situations and as such, pair of equal forces acting in opposite directions exist in all the situations ( I, II, III and IV)

Newton's third law states that for every action, there will be an equal and opposite reaction. action and reaction are subject to the third law.

depends on what you mean by "group." for order, it would be coleoptera (beetles). for class, it would be insecta (insects). for phylum, it would be the arthropoda (animals with jointed exoskeletons).

explanation:

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6