<p>To solve the problem of finding the time taken between 40% decay and 85% decay of a radioactive substance with a half-life of 30 minutes, we can follow these steps:</p><p><strong>Step 1: Understand the Decay Process</strong> The half-life of a radioac
If the half-life of a given substance is 60 days, how long will it take for a 30 gram sample of the substance to decay until there is only 7.5 grams of the radioactive material remaining? If uranium-238 has a half-life of 45 billion year...
How to Find Half-Life: To find a half-life of a radioactive substance, you must know some original amount of the substance {eq}(N_0) {/eq} and the amount of that substance {eq}N_t {/eq} that is present after a certain amount of time {eq}(t) {/eq}. When you have this in...
The half life of a radioactive substance is 20s, the time taken for the sample to decay by7/8thof its initial value is View Solution Half-life of a radioactive sample is 5 days. What time is taken for78th part of the sample of decay ?
(Half life time) = (Napierian logarithm of 2)/(disintegration constant) The equation is: t1/2= ln(2)/λ Where: λ : disintegration constant of the system t1/2: Half life time Half-life Formula Questions: 1) What is the half life of a radioactive substance whose disintegration constant...
Half-life is a measurement of the time it takes for one-half of a radioactive substance to decay (in this sense, decay does not mean to rot, but to diminish in quantity). The atoms of radioactive substances, such as uranium and radium, spontaneously break down over time, transforming ...
half-life(redirected from half-lifes)Also found in: Dictionary, Thesaurus, Medical, Financial. half-life half-life, measure of the average lifetime of a radioactive substance (see radioactivity) or an unstable subatomic particle. One half-life is the time required for one half of any given...
The half-life (T½) of a radioactive substance is the time required for a population of atoms to decay to half the original number. From: Leibel and Phillips Textbook of Radiation Oncology (Third Edition), 2010 About this pageAdd to MendeleySet alert ...
half-life 释义 half-life noun[C]physicsspecialized uk /ˈhɑːf.laɪf/ us /ˈhæf.laɪf/ thelengthoftimeneededfor theradioactivityof aradioactivesubstanceto bereducedbyhalf(放射性物质的)半衰期 SMART Vocabulary: related words and phrases Physics: radiation & radioactivity alpha particle...
The half-life of a radioactive substance is the interval in which a sample of the substance is reduced to half of its original mass. Let the initial mass of a sample of a radioactive substance be m0. Let the half-life of ...