1.

the amount of 14 carbon in a wooden article is only one fifth of that found in a fresh piece of wood determine the age of article if the half life for the radioactive energy of 12c is 5730 (class 12)​

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Answer:

Every 5,730 YEARS, the radioactivity of carbon-14 DECAYS by half. That half-life is critical to radiocarbon DATING. Since carbon-12 doesn't decay, it's a good benchmark against which to measure carbon-14's inevitable demise. The less radioactivity a carbon-14 isotope emits, the OLDER it is

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