Webb1 dec. 2024 · Half-life is the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve or for the count rate to halve. Count-rate … WebbA: Formula to calculate the number of half-lives is, Q: A sample of the radioactive nuclide 199Pt is prepared that has an initial activity of 7.80×1011 Bq… A: a) We know , half life t12=t ln2ln NoNtinitial activity = 7.8x1011next activity = 9.45x1010 Q: A radioactive sample has a decay constant of 0.2193/min. (a) What is its half-life?
SOLVED: The radioactivity of a sample is R1 at a time T1 and R2 at …
WebbIf the half life of the specimen is T, the number of atoms that have disintegrated in the time (T2-T1) is proportional to Q. The radioactivity of a sample is R 1 at a time T 1 and R 2 at … Webb8 mars 2024 · asked Mar 8, 2024 in Physics by Takshii (35.5k points) A radioactive sample is undergoing α decay. At any time t1, its activity is A and another time t2, the activity is … flinders foundation ball
Radioactive Decay & Half Life Graph & Equation - Study.com
WebbThe activity of a radioactive sample is the number of nuclear disintegrations per second, which is equal to the first-order rate constant times the number of radioactive nuclei present. The fundamental unit of radioactivity is the curie (Ci), where 1 Ci corresponds to exactly $3.70 \times 10^{10}$ disintegrations per second. WebbAnswer of The radioactivity of a sample is R1 at time T1 and R2 at time T2 If the half life of the specimen is T. Answer of The radioactivity of a sample is R1 at time T1 and R2 at time T2 If the half life of the specimen is T. Talk to Our counsellor: Give a missed call 07019243492. Login / Register. Notes. Webb10 feb. 2024 · Example 4: The mean lives of a radioactive material for α and b radiations are 1620 years and 520 years respectively. The material decays simultaneously for α and b radiation. The time after which one fourth of the material remains un-decayed is Sol: The mean life of the radioactive material for simultaneous α and β decay is αβ αβ ττ ... greater consumption of alcohol leads to more