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有效數位

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Significant Figures: Definition, Examples, Rules, Rounding

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Significant figures are the number of digits in a value or a measurement necessary to decide the accuracy and precision of measurement.

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Repulsion  (a force pushing objects away)

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Repulsion  (a force pushing objects away)

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Example sentences:

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Attraction (a force pulling objects together)

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Attraction (a force pulling objects together)

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Stephen write three example sentences for attract, attracted and attraction :)

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Stephen add translation and meaning

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Stephen add translation and meaning

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AC = Alternating current

Alternating = changing

Current = the movement of charges

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Direct current = DC