each sketch below shows three objects with an electric charge. in each case, decide whether there is a net…

each sketch below shows three objects with an electric charge. in each case, decide whether there is a net force acting on the object outlined in green. if there is a net force, decide whether it pushes the green - ring object to the left or right. then select the appropriate button under the sketch. for example, if there is a net force pushing the green - ring object in the first sketch to the left, select the left button under the first sketch. if there is no net force on the green - ring object in the second sketch, select the middle button under the second sketch. and so on.

each sketch below shows three objects with an electric charge. in each case, decide whether there is a net force acting on the object outlined in green. if there is a net force, decide whether it pushes the green - ring object to the left or right. then select the appropriate button under the sketch. for example, if there is a net force pushing the green - ring object in the first sketch to the left, select the left button under the first sketch. if there is no net force on the green - ring object in the second sketch, select the middle button under the second sketch. and so on.

Answer

Explanation:

Step1: Recall Coulomb's law

The force between two charges $q_1$ and $q_2$ separated by a distance $r$ is given by $F = k\frac{q_1q_2}{r^2}$, where $k$ is the Coulomb's constant. Like - charges repel and opposite - charges attract.

Step2: Analyze the first case

Let the green - ring object be the middle one. The left charge $q_1=- 1$ and the right charge $q_2=-3$. Both are negative, so they repel the middle negative charge. The force from the left charge $F_1$ and from the right charge $F_2$. Since $|q_2|>|q_1|$ and assuming equal distances (if not given otherwise), the net force on the middle (green - ring) object is to the left.

Step3: Analyze the second case

The left charge $q_1=-1$ and the right charge $q_2 = - 1$, and the middle (green - ring) object is positive ($q = + 3$). The left charge attracts the middle charge with force $F_1$ and the right charge attracts the middle charge with force $F_2$. Since the magnitudes of the left and right charges are equal and assuming equal distances, the net force on the middle (green - ring) object is zero.

Step4: Analyze the third case

The left charge $q_1=+3$, the middle (green - ring) object has charge $q=-2$, and the right charge $q_2 = + 2$. The left positive charge attracts the middle negative charge with force $F_1$ and the right positive charge attracts the middle negative charge with force $F_2$. Since $|q_1|>|q_2|$ and assuming equal distances, the net force on the middle (green - ring) object is to the left.

Answer:

Left, None, Left