Written in scientific notation, to three significant digits, the number 0.002580 is? x 10?

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

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

See the attachment and solve question 5th