Describe the nature of the radiations emitted by the radioactive source. Also highlight the properties. Derive the relations between the half-life and average life with time.

Q: The decay behavior of a radioactive substance obeys first order kinetics: ln(N/No) = –kt, where N is…

A: first order kinetics,lnNN0=-ktwhere N is amount of radioactive nucle at timehalf life=20 min=1200…

Q: A 1.13-cm panel of a certain material can absorb 86.5% of incoming rays from a radioactive source.…

A:

Q: Att=0, a radioactive sample contains 3.50 ug of pure 11 "C, which has half-life of 20.4 min. The…

A:

Q: A certain radioactive nuclide decays with a disintegration constant of 0.0256 h. (a) Calculate the…

A: We have, disintegration constant, λ=0.0256 h-1 we have to find the half-life, a fraction of the…

Q: If the mass of a radioactive sample is doubled, do (a) the activity of the sample and (b) the…

A: The expression for the activity is, As radioactivity and mass of sample is directly proportional to…

Q: Describe the nature of the radiations emitted by the radioactive source. Also highlight the…

A: Radioactive sources are unstable nuclei which emits gamma, alpha and beta particle. Gamma ray…

Q: If the parent nucleus in a ß- decay is He, what is the daughter nucleus? chemPad O Help Greek If the…

A:

Q: What is a radioactive tracer?

A: Radiactive tracer: The tracer is used to detect the radioactive particle in any kind of mechanism.…

Q: The half-life of Erbium-172 is 49.3 hours. What is the hourly decay rate? Express the result to four…

A: Given data The half-life of erbium 172 is given as t = 49.3 hours.   Now, the hourly decay rate is…

Q: radioactive

A: Given: The remaining sample = 0.004 of the original value

Q: A particular radioactive sample undergoes 2.50××10^6 decays/s. a) What is the activity of the…

A: In the given question , We have to determine  the values of given parts.

Q: Both 1) Equation for a radioactive decay of a nucleus is  dNdTdNdT=−??. Given decay constant is λ =…

A: The question is regarding radioactive decay of the nucleus and half life.

Q: A sample of radioisotope has a decay constant of 9.976✕10-7 s-1 and prepared with an initial…

A: Given data: The decay constant of a sample of a radioisotope is, The initial activity of a sample…

Q: Calculate the energy emitted during nuclear decay.

A:

Q: What is the source of the energy emitted in radioactive decay? Identify an earlier conservation law,…

A: Radio active decay is process in which atoms of higher atomic number lose their energy and release…

Q: Q41. A radioactive source has a half-life of 20 days. Calculate the activity of the source after 70…

A: Radioactive elements emit radiation of different types. With time the amount of the radioactive…

Q: After 2.00 days, the activity of a sample of an unknown type radioactive material has decreased to…

A: Formula to calculate the activity

Q: The activity of a 5mg radioactive sample whose atomic mass is 220u and half life is 3.5 days:

A:

Q: The rate at which radioactive nuclei decay is proportional to the number of such nuclei that are…

A: Given, half life period  t1/2= 1000 year

Q: Francium-223 has a half-life of 21.80 min. How many nuclei are initially present in a 25.0-mg sample…

A:

Q: What is the half-life of a radioactive isotope if the activity of a sample drops from 6,080 cpm to…

A:

Q: A radioactive sample has a decay constant of 0.219 3/minute. (a) What is its half-life? (b) If at…

A: The relation between the half life and the decay constant is  T = 0.693λ The equation of…

Q: A reaction rate is the number of reactions per time unit in a medium irradiated by a neutron flux…

A:

Q: Complete the following radioactive decay formulas.  a. 12 / 5 B → ? + e^- + anti nu b) ? → 14 / 7…

A:

Q: What is the activity of a sample of C that contains 6.7x1020 nuclei? The half-life of C is 5700…

A: Solution:In 5700 years 6.5 × 10202 nuclei decay will take place, thus we have:5700 yrs =…

Q: Describe the effect of the shielding on the gamma rays, neutrons and neutrinos that reach it from…

A: The radiations such as gamma rays and high energy neutrons are highly penetrating radiations. To…

Q: 50V has one of the longest known radioactive half-lives. In a difficult experiment, a researcher…

A: The expression for the half life is,

Q: What fraction f1 of a radioactive sample will be left after 3 half‑lives? f1 = ? What fraction f2…

A:

Q: At t = 0 we begin to observe two identical radioactive nuclei that have a half-life of 5 min. At t =…

A:

Q: Complete the following radioactive decay formulas: (a) B → ? + e¯ + D (b) 30 Th → Ra + ? (c) ? → 4N…

A: (a)The given reaction is a beta-minus decay. In a beta-minus decay, the mass number of the product…

Q: The half-life of a radioactive nuclide is 20 years. If a sample of this nuclide has an activity of…

A: Formula of radioactivity is as follows: I=I0e-λt…

Q: Complete the following radioactive decay formulas. (Enter the missing reactant or product. Enter…

A:

Q: A freshly prepared sample of certain radioactive isotope has an activity of 12.0 mCi. After 4.00h,…

A:

Q: Complete the following radioactive decay formulas. (Enter the missing reactant or product.) a. 12 /…

A:

Q: 1)Given a half-life of a radioactive source is 435 years. Calculate the time taken for its activity…

A:

Q: Radioactivity depends on the nucleus and not the atom or its chemical state. Why, then, is one…

A:

Q: You can sometimes find deep red crystal vases in antique stores, called uranium glass because their…

A:

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.