18. for every action, there is an equal and opposite reaction.

a. newton’s first law

b. newton’s fourth law

c. newton’s second law

d. newton’s third law

Which accurately compares concave and convex lenses?

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th

Atorque acting on an object tends to produce a. equilibrium b. rotation c. linear motion d. velocity e. a center of gravity