Final answer:
The electric field in a region of space where Ex = -1000x² V/m, where x is in meters, is given as Ex = -1000x² V/m.
Step-by-step explanation:
The electric field in a region of space where Ex = -1000x² V/m, where x is in meters, is given as Ex = -1000x² V/m.
This means that the electric field is directed along the x-axis and its magnitude depends on the square of the x-coordinate.
For example, if x = 2 meters, the electric field would be Ex = -1000(2)² V/m = -4000 V/m.