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atomski sat

A very precise clock that operates using the elements cesium or rubidium. A cesium clock has an error of one second per million years. GPS satellites contain multiple cesium and rubidium clocks.

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Industry/Domain: Chemistry Category: General chemistry

sila

Subjekt koji, kad je primijenjen na masu, uzrokuje njeno ubrzanje. Drugi zakon gibanja Sir Isaaca Newtona kaže: jačina sile = masa * akceleracija.

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