1. A Medium
2. One of these 4, the refractive index of the medium <span>Choose whichever are on the test.
3. </span>properties and nature of medium, Hope this helps.
Fnet=F1+F2 or Fnet=F1-F2
So 400n up - 600n down
Fnet= 400-600= -200N
i believe thaT IT IS B BUT PLEASE TELL ME IF IM WRONG I WAS JUST USING LOGIC
The Big Bang Theory is a theory that describes the origin of the Universe. This theory was first proposed by the Belgian cosmologist G. Lemaitre in 1931.
- The evidence of universe expansion that supports the Big Bang Theory is the observation that the temperature of the universe is decreasing.
- According to this theory, the Universe is continuously expanding as it becomes cooler.
The most important lines of evidence that support the Big Bang Theory include:
- The observed expansion of the space in the Universe.
- The discovery of the cosmic microwave background radiation (CMB) is believed to be leftover radiation from the Big Bang.
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