Un haz de luz incide en una superficie plana que separa dos medios cuyos índices son 1.6 y 1.4. El ángulo de incidencia es de 30° en el medio que tiene el índice más alto. ¿Cuál es
el ángulo de refracción?

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   

Assuming you're referring to significant figures, none of these answer choices are shown to be zero as significant digits. did you, by chance, forget to add something?