Answer:
An official Olympic Sized pool is 50 meters long by 25 meters wide.
Explanation:
An appropriate hypothesis explaining the observation of distant galaxies moving away from each other, and that they do so more rapidly the further they are can be found in the Big Bang Theory. This theory suggests our universe began with a 'big bang' causing galaxies to move away from each other, a process which continues today.
Based on the observations mentioned, an appropriate hypothesis might involve the Big Bang Theory. This theory in physics and astronomy assumes that our universe started from a singularity - a very high-density and high-temperature state. The Big Bang Theory suggests that after the initial explosion, the galaxies began moving away from each other, a process which continues till today.
The farther a galaxy is from us, the faster it's receding, which is known as Hubble's Law. This observed phenomenon matches with the theory's premise, providing validating evidence for the Big Bang.
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B. The neutrons do not affect the mass or stability of an atom's nucleus, but they are involved in most interactions between two atoms.
C. The neutrons do not affect how the atom interacts with other atoms, but they do have an effect on the mass and stability of the nucleus.