Which of the following parts of the electromagnetic spectrum has the lowest energy? a. microwaves b. visible light c. x-rays d. ultraviolet light

A. microwaves have the lowest energy in the electromagnetic wave spectrum.

B. visible light is higher energy than microwaves.

C. X-rays are high energy second only to gamma rays in intensity.

D. UV is the next highest energy band after the viable light spectrum. they have less energy than x-rays

so the answer is A.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.