At what point on a line through the ends of the meter stick is the +5.00-µC point charge placed at the 0.0 cm mark of a meter stick and the -4.00-µC point charge placed at the 50.0 cm mark?

A. The +5.00-µC point charge is placed at the 0.0 cm mark and the -4.00-µC point charge is placed at the 50.0 cm mark.
B. The +5.00-µC point charge is placed at the 0.0 cm mark and the -4.00-µC point charge is placed at the 50.0 cm mark.
C. The +5.00-µC point charge is placed at the 0.0 cm mark and the -4.00-µC point charge is placed at the 50.0 cm mark.
D. The +5.00-µC point charge is placed at the 0.0 cm mark and the -4.00-µC point charge is placed at the 50.0 cm mark.

It accurately describes the placement of the +5.00-µC point charge at the 0.0cm mark and the -4.00-µC point charge at the 50.0cm mark on the meter stick, as specified in the question. Therefore, the correct answer is option A) The +5.00-µC point charge is placed at the 0.0cm mark and the -4.00-µC point charge is placed at the 50.0cm mark.

Explanation:

In this scenario, we have a meter stick where the +5.00-µC point charge is located at the 0.0cm mark, and the -4.00-µC point charge is located at the 50.0cm mark. This arrangement allows us to determine the point on the line through the ends of the meter stick where these charges are placed.

Using the concept of electric field and Coulomb's law, we can calculate the point where the electric field due to these charges cancels out, known as the point of equilibrium or the point where the net electric field is zero. Therefore, the correct option is A, where the +5.00-µC point charge is at the 0.0cm mark and the -4.00-µC point charge is at the 50.0cm mark.

Therefore, the correct answer is option A) The +5.00-µC point charge is placed at the 0.0cm mark and the -4.00-µC point charge is placed at the 50.0cm mark.