结果1 题目 The number of parent nuclei in a sample of a radioactive element is N at time r.The radioactive element has a half-life2The rate of decay is proportional to A A N Bt○C1/x D:3○ 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
A sample of a radioactive element that contains 1.0 xx 10^(3) nuclie decays to 6.2 xx 10^(1) nuclei in 10minutes . What is its sepecific decay constant?
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half-life of a radioactive element is defined as the time that it takes for one-half a quantity of the element to decay. Radioactive Carbon-14 is found in all living organisms and has a half-life of 5730 years. Archaeologists use this information to estimate the age of fossils. Consider...
MANUFACTURING PROCEDURE OF A RADIOACTIVE ELEMENT.A method for making a radioactive element including the steps of a) arranging a mold; b) introducing a plurality of radioactive seeds in the mold; c) introducing liquid bioabsorbable support material into the mold; d) solidify the liquid ...
百度试题 题目【名词解释】A naturally or artificially produced radioactive isotope of an element 相关知识点: 试题来源: 解析 radioisotope 反馈 收藏
annular combustor annular core pulse re annular counter annular focus annular fuel element annular injector annular ring annular wing annulus annulus combustion ch annulus drag annulus water annunciated panel annunciator alarm annunciator window an nutrition anodebalancingcoil anodebattery anode cavity anodecha...
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After 300 days, the activity of a radioactive sample is 5000 dps (disintegrations per sec). The activity becomes 2500 dps after another 150 days. The initial activity of the sample in dps is View Solution If half-life of a radioactive element is3hours. After9hours its activity becomes ...
What’s true of a radioactive element? FEMALE STUDENT: It decays? It turns into other elements?Oh, so does that explain why it was missing in the periodic table? MALE PROFESSOR: Exactly. Because of its radioactive decay, element 43 doesn't last very long …and therefore… if it ever ...