The once white light beam would turn green. the people (humans) would only see green.
Answer:
a.) live in a smart community
Explanation:
A standard incandescent light burns through 50 watts of electricity per hour. Replacing an incandescent bulb with an LED bulb can save 6 tons of household emissions per year. Saving 6 tons of carbon emissions is the same as reducing your gas consumption by 700 gallons. (proving b wrong)
you can help reduce your carbon footprint and other greenhouse gases by using energy-efficient home appliances since they have lower emissions of harmful gases into the environment. (proving c wrong)
Answer:
Explanation:
Electromagnetic waves all travel at the speed of light when in vacuum, and essentially this same speed in normal air. Since wave speed is product of frequency and wavelength, c = f λ and λ = c/f = (3.00 x 108 m/s) / (7.5 x 1014 Hz) = 4.00 x 10-7 m = 400 x 10-9 m = 400 nm.
Human can do it. artificial photosynthesis
