The bat hits the baseball forward. The baseball hits the bat backwards.
The bee hits the windshield northward./The windshield hits the bee southward
Newton's third law states that:
"When an object A exerts a force (called action) on an object B, then object B exerts an equal and opposite force (called reaction) on object A"
It is important to note that the action force and the reaction forces act on the same pair of objects.
Let's now analyze each case:
- The earth pulls down on the chair./The ground pushes up on the chair. --> NO. The correct pair would be: The earth pulls down on the chair / the chair pulls up on the earth (in fact, the chair exerts a gravitational force on the Earth as well, pulling upward)
- The bat hits the baseball forward. The baseball hits the bat backwards. --> TRUE. This is an example of action/reaction force pair.
- The boy pushes rightward on the box./Friction resists the motion leftward on the box. --> FALSE. The correct pair would be: The boy pushes rightward on the box / the box pushes leftward on the boy
- The bee hits the windshield northward./The windshield hits the bee southward. --> TRUE. This is an example of action/reaction force pair.
The rope pulls the box upward./The earth pulls the box downward. --> FALSE. A correct pair would be: the rope pulls the box upward / the box pulls the rope downward.
I believe the correct answer from the choices listed above is the first option. Decreasing a telescope's eyepiece focal length will increase magnification. <span>The magnification of the </span>telescope<span> image is (</span>focal length<span> of the objective) divided by (</span>focal length <span>of the </span>eyepiece<span>). Hope this answers the question.</span>