Answer:
- the first direct detection of gravitational waves came in 2015
- gravitational waves are predicted to travel through space at the speed of light
- the existence of gravitational waves is predicted by Einstein's general theory of relativity
Explanation:
The gravitational waves are waves that are produced by the objects, and depending on the mass of the object they can be stronger or weaker in their influence.
These waves have been in the minds of the scientists for more than a century now, with Einstein predicting them in his theory of relativity. The only problem with these waves was that there was no proof of them. The proof finally came in 2015 when these waves were detected from the first time, with two black holes to be thanked for that as they were the source of them.
These waves are predicted to be able to travel with the speed of light through space when they have small amplitudes.
Answer:
The answer is A.
Explanation:
Permeable means allowing liquids or gases to pass through.
So porous rock is known as <u>P</u><u>e</u><u>r</u><u>m</u><u>e</u><u>a</u><u>b</u><u>l</u><u>e</u><u> </u><u>R</u><u>o</u><u>c</u><u>k</u><u>s</u> .
The length is 88 cm, multiply the width by two and subtract it from the whole perimeter. Then divide the whole perimeter again by two to find the length of one side.
Because modern civilization had accomplish that
They began to form by a combination of volcanic activity and the deposit of marine sediments. It formed along northwest Africa about 530 million years ago. ... As the Appalachian Mountains eroded, sand and clay were deposited over Florida's limestone layer.