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Evgesh-ka [11]
2 years ago
13

when the total amount of a quantity is the same before and after some event occurs, we say that the quantity is (blank)

Physics
1 answer:
Effectus [21]2 years ago
8 0

Ah hah !  That description fits things like mass, linear momentum,
energy, angular momentum, electric charge, and politicians.  They
never appear or disappear, they just move from place to place. 
We say that those quantities are conserved.

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