Question

1. what does it mean when scientists say that \like charges repel and opposite charges attract\?

Explanation:

In the context of electric charges (a concept in Physics, a subfield of Natural Science), "like charges" refer to charges of the same type (e.g., two positive charges or two negative charges), and they exert a force on each other that pushes them apart (repel). "Opposite charges" refer to charges of different types (e.g., a positive and a negative charge), and they exert a force on each other that pulls them together (attract). This is a fundamental principle of electrostatics.

Answer:

When scientists say "like charges repel and opposite charges attract", it means that two charges of the same type (e.g., two positive or two negative charges) exert a repulsive force on each other (push each other away), while two charges of different types (e.g., one positive and one negative charge) exert an attractive force on each other (pull each other towards each other). This is a basic principle of electric charge interactions in physics (electrostatics).