Answer:
D. When the box is placed in an elevator accelerating upward
Explanation:
Looking at the answer choices, we know that we want to find out how the normal force varies with the motion of the box. In all cases listed in the answer choices, there are two forces acting on the box: the normal force and the force of gravity. These two act in opposite directions: the normal force, N, in the upward direction and gravity, mg, in the downward direction. Taking the upward direction to be positive, we can express the net force on the box as N - mg.
From Newton's Second Law, this is also equal to ma, where a is the acceleration of the box (again with the upward direction being positive). For answer choices (A) and (B), the net acceleration of the box is zero, so N = mg. We can see how the acceleration of the elevator (and, hence, of the box) affects the normal force. The larger the acceleration (in the positive, i.e., upward, direction), the larger the normal force is to preserve the equality: N - mg = ma, N = ma+ mg. Answer choice (D), in which the elevator is accelerating upward, results in the greatest normal force, since in that case the magnitude of the normal force is greater than gravity by the amount ma.
Answer:
weight
Explanation:
weight is the pull of gravity so its a force !!
DNA holds or genes, traits and we all have different amounts of chromosomes and that makes us different from other animals. A fishes genes would be different from ours because there DNA is different they have a different set of genes and chromosomes. Hop that Helped. we are genetically different.
Answer: 2.23694 If you caclate and it tranfrome it it makes: 2.23694
A good example would be kicking a soccer ball, nothing will happen to the ball if you don’t directly apply force to it (through your leg)
