The description of the question provided above points out to the famous Big Bang Theory. In addition, this theory is among the most accepted by cosmologists because it fits like a glove to the phenomenon the universe is experiencing right now: it is expanding and distances between celestial bodies are getting farther and farther.
Answer:

Explanation:

Round to three significant digits

Answer:
magnet 4
because opposite direction i.e north and south will attract each other
Answer: This is not easy lol
Explanation:
Answer:
V=2.8 ml
Explanation:
volume of the cube is it would be 20.3 - 17.5 ml so 2.8 ml.