Radioactivity (10 of 16) Decay Activity, Example Problems

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Goes over four different worked examples for calculating activity and half-life from radioactive decay. Activity is defined as the number of decays per second. It is abbreviated with the symbol A and has the metric unit the Becquerel (Bq). One Becquerel is equal to one decay per second.

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This is awesome. The last question type took forever to find a solution for and glad you covered it!!!

Meinan
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Thank you, will finally be able to do these sums in my exam

surienhughes
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Man good bless ❤️❤️❤️ you hlep a lot befor my exam

dr.m
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You are the best, please make a video in binding energy

chineduobodoeshike
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Bruh ! U have to come here to Japan, there's no teacher who put this type of questions in the exam, our physic is just math

THEDragonTechnoGamer
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Brilliant explanation, really impressed. So what about - I have 370MBq of I-125 on 23 Mar - How much did I have on 16th of Mar ??? Can you help please

paulmcgarry
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Thank you so much! This helped greatly.

visalnip
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What if at 7:00 you have that the half-life is 9.7 hr and it's asking you to find what amount remains in Bq after 12 hrs? Bc I was trying to follow you and did 12 hr/9.7 hr and got 1.23711 half-lives, which means that the Activity (in Bq) will be some # between the first and second half-life [T1/2 (1) and T1/2 (2)], how do you find that exact # (the Activity)?

noori
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where did (10^-1) come from in the last example ?

JorDANKa
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Please make videos about center of mass of point particles and for infinitesimal ...

shannenedmilao
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what is the activity of cobalt 60 after 8 years, if the present activity is 100 curie

renishadsouza
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what will be the activity of elemnet of a=625mci h.l = 8 days after 20 days becouse i get different result from online calculator of activity

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