Physics, 18.03.2021 03:20 giulianna41
How many half-lives have passed if a sample contains 25% of its original carbon-14?
1 half-life
2 half-lives
3 half-lives
4 half-lives
Answers: 1
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Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?
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Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?
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Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?
Answers: 2
How many half-lives have passed if a sample contains 25% of its original carbon-14?
1 half-life
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