An 11.0-w energy-efficient fluorescent lightbulb is designed to produce the same illumination as a conventional 40.0-w incandescent lightbulb. assuming a cost of $0.111/kwh for energy from the electric company, how much money does the user of the energy-efficient bulb save during 220 h of use?

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.