A sound wave has a frequency of 425 Hz. What is the period of this wave? 0. 00235 seconds 0. 807 seconds 425 seconds 850 seconds.

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.