Galileo saw that Venus went through phases just like the moon .
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Answer: True
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Each atom emits or absors electromagnetic radiation, but only in some frequencies that are characteristic of its chemical element.
Now, if we supply energy in the form of heat (thermal energy) to a certain element in its gas phase, this will be stimulated and its atoms will emit radiation in certain frequencies of the visible spectrum, which constitute its <u>emission spectrum</u>.
If the same element, also in gaseous state, receives electromagnetic radiation, it absorbs in certain frequencies of the visible spectrum, precisely the same ones in which it emits when it is stimulated by heat. This will be its <u>absorption spectrum</u>.
This means that every element absorbs radiation in the same wavelengths in which it emits it.
Answer:
.376 m
Explanation:
c = speed of light = 3 x 10^8 m/s
c = wavelength * freq
3 x 10^8 = 7.98 x 10^8 * f
f = .376 meters
We grow crops (plants) on earth, so it's very important for that to go beyond earth because if there is no way to grow crops, we won't get enough nutrients from some synthetic (fake) food. hope I helped! :)
