12 The count-rate from a sample of radioactive material is investigated by a team of scientists in a laboratory.(a)With the radioactive sample in place, the count-rate from the sample is determined every7 days, with the results shown below. The background count-rate has already been subtr...
To find the half-life of a radioactive substance that undergoes 80% decomposition in 345 minutes, we can follow these steps: Step 1: Understand the ProblemWe know that the substance undergoes 80% decomposition, which means that 20% of the original substance remains after 345 minutes. If we ...
In a sample of radioactive material , what fraction of the initial number of active nuclei will remain undisintegrated after half of the half life of the sample ? A14 B12√2 C1√2 D√2−1Submit In a sample of radioactive material, what fraction of initial number of active nuclei will...
Determine the half-life (in s) of a radioactive sample that contains 1.60 times 10^15 atoms of the radioactive nuclide and has an activity of 6.40 times 10^11 Bq. How much time is required for a 6.25-mg sample of radioactive C to ...
A packaging system for the transportation and storage of materials, including radioactive and other hazardous materials. The system comprises a primary container removably received within a secondary container, and the secondary container being removably received within a tertiary container. The primary ...
(expose) to radium, a kind of radioactive material in the universe, people absorbed radiation and got sick immediately.(所给词的正确形式填空) 相关知识点: 试题来源: 解析 Exposed 【详解】 考查非谓语动词。句意:人们接触到镭,一种宇宙中的放射性物质,就会吸收辐射并立即生病。表示“接触”短语为...
37 A powder contains 400mg of a radioactive material that emits о-particles.The half-life of the material is 5 days.What mass of that material remains after 10 days?C A 0mg B 40mg C 100mg D 200mg 相关知识点: 试题来源: 解析 C ...
A package of radioactive material that was supposed to be delivered to an on-campus office at Texas A&M University has gone missing,CBS affiliate KBTX reports. According to an internal email sent by Christopher Meyer, an assistant VP with the Office of Safety and Security, the shipment of ...
Crashes with LS-DYNA® Gilles Marchaud, Louis Vilela, Stéphane Nallet AREVA TN, Montigny-le-Bretonneux, France Abstract For 50 years, AREVA TN has been supplying customer-focused, innovative transportation and storage solutions for radioactive material with the ...
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