Evidence to a chemical and physical change "a straight piece of wire is coiled to form a spring

The physical change is that it changed shapes it never changed its chemical identity it would be different if the spring was rusted it's like how you can rip a piece of paper in half and it is still paper

Answerthe force between the charges will be  f/9 (one-ninth of force f)explanationcoulomb's law relates the magnitudes  two point charges q₁ and q₂, the distance, r, between the charges, and the electrostatic force, f, between the two charges:     k represents coulomb's constant, k = 8.99×10⁹ n·m²/c².note that if we have r = 3r, then