Science, asked by jkvs1971, 6 months ago

what are st unit? what is the st unit of time?

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Answered by Anonymous

Answer:

The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the cesium frequency ΔνCs, the unperturbed ground-state hyperfine transition frequency of the cesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s-1.

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