Answer:
A <u>tetraquark</u> in physics is an <u><em>exotic meson composed of four valence quarks</em></u>.
Explanation:
It has been suspected to be allowed by <u><em>quantum chromodynamics</em></u>, the modern story of strong interactions.
Hope it helps.
The law of conservation of mass states that, for any closed system, the mass of the system must remain constant.
So, in other words, mass cannot be created nor destroyed.
In a burning log, the initial mass of the wood and the ashes that are left behind after it burns are different, which would seem to violate the law of conservation of mass.
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Answer:
A BEC ( Bose - Einstein condensate ) is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero is called BEC.
Examples - Superconductors and superfluids are the two examples of BEC.
Explanation: