It us 200 energy if it the right awnser
A very small portion of the electromagnetic spectrum is visible
to the human eye.
It's kind of hard to talk about real numbers, since the electromagnetic
spectrum has no ends. But if you consider the spectrum to be the
range of frequencies between household electrical power and gamma
rays, you get a range of roughly 50 octaves, of which our eyes are able
to detect about one octave.
Answer:
The Chinese began experimenting with the gunpowder-filled tubes. At some point, they attached bamboo tubes to arrows and launched them with bows. Soon they discovered that these gunpowder tubes could launch themselves just by the power produced from the escaping gas. The true rocket was born.
Explanation: