1. Blue-green light has a frequency of about Hz. Use the relationship to show that the wavelength of this light in air is m. How does this wavelength compare with the size of an atom, which is...

1. Blue-green light has a frequency of about

Hz. Use the relationship

to show that the wavelength of this light in air is

m. How does this wavelength compare with the size of an atom, which is about

m?

2. Suppose you walk toward a mirror at 2 m/s. Show that you and your image approach each other at a speed of 4 m/s (and not 2 m/s).