You replace a 40 W incandescent lightbulb with an 8 W LED bulb. If you leave your lights on 24 hours a day, how much energy are you saving each day by replacing this bulb?

A physics professor claims in court that the reason he went through the red light (λ = 660 nm) was that, due to his motion, the red color was Doppler shifted to green (λ = 510 nm). How fast was he going?

What is the speed of a wave which has a frequency of 200hz and a wave length of 0.50m

According to Archimedes'principle, the mass of a floating object equals the mass of thefluid displaced by the object. Use the principle to solve thefollowing problems: a.

Which temperature scale measures water boiling at 100 degrees? Which temperature scale measures water boiling at 100 degrees?

Light travels approximately 982,080,000 ft/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in one year. Calculate the distance of one light year in feet.

A question about a moral issue is answered by examining facts rather than opinions. is generally considered a scientific question. cannot be answered with scientific methods. cannot be debated through discussion.

Who is most likely to have a physiological age that is much younger than his or her actual age?

Inflammation happens when the mucous membranes cannot stop a pathogen. True False

If the diameter of the space station is 730 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2?

The act, process or state of the change in place or position oa a body with respect to time and relative to the observer is said to be : - 1. Rest 2. Stationary 3. Motion 4. None of the above