Final answer:
The voltage required between the plates where a positive charge is placed and the distance between the plates is 0.1 m is 7500 V.
Step-by-step explanation:
The voltage required between two plates can be found using the formula:
V = Ed
Where V is the voltage, E is the electric field strength, and d is the distance between the plates. In this case, the electric field strength is given as 7.50 x 104 V/m and the distance between the plates is 0.1 m. Substituting these values into the equation:
V = (7.50 x 104 V/m) x (0.1 m) = 7500 V
So, the voltage required between the plates is 7500 V.