What were the two methods used to separate U-235 from U-238 in the Manhattan Project during World War II?

Q: What are the safeguards to prevent a reactor exploding like a fission bomb?

A: Moderators and control rods are safeguards used to avoid the excessive fission reactions in nuclear…

Q: Why is food irradiated with gamma rays from a Cobalt-60 source? Does the food become radioactive?…

A: There are mainly there ionizing radiation are used in food irradiation; X-ray, electron beams and…

Q: 40. Determine the amount of time for polonium-210 to decay to one fourth its original quantity. The…

A: Given, Half-life of polonium-210 is 138 days. We need to calculate time to decay polonium-210 to one…

Q: Why is there, unlike fission fuel, no limit to the amount of fusion fuel that can be safely stored…

A: Unlike fission fuel, no limit to the amount of fusion fuel that can be safely stored in one…

Q: What is the function of the moderator in a nuclear reactor?

A: To sustain nuclear chain reaction, nuclear reactor must works in its critical state. So, that to…

Q: Iron-58 and bismuth-209 fuse into a large nucleus plus a neutron. Write the reaction equation and…

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Q: When a nucleus undergoes fission, the two daughter nuclei are generally radioactive. By which…

A: Nuclear fission is the process when a heavier nucleus breaks into two lighter nuclei.

Q: U-235 has a half-life of about 700 million years. What does this say about the likelihood of fission…

A: Given: U-235 has a half-life of about 700 million years. What does this say about the likelihood of…

Q: Which expression correctly describes the radioactive decay of a substance whose half-life is T?

A: Radioactive decay is given by , Nt = N0e-λt And rate constant λ = ln2t1/2 = ln2T

Q: In a breeder reactor, U-238 is made into the fissionable fuel   A. U-239   B. Pu-239   C.…

A: In normal reactors, U-235 is only used as fuel which is available as only around 0.7% of natural…

Q: Uranium 238 decays to Thorium 234 by the process of 1) Alpha radiation 3) Gamma radiation 2) Beta…

A: First of all we understand what each option means,  1. Alpha radiation or alpha decay means release…

Q: Choose the BEST answer to the following. Chain reactions in a fission reactor are caused by (a)…

A: Nuclear fission is a type of nuclear reaction in which a heavy nucleus splits into two lighter…

Q: When uranium fissions, the fission products are radioactive because the nuclei are neutron-rich.…

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Q: If U-238 splits into two even pieces, and each piece emits an alpha particle, what elements are…

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Q: Suppose a person swallows some radioactive material by accident. What information is needed to be…

A: The information needed to be able to assess possible damage when a person swallows radioactive…

Q: What would have to be the reproduction rate in order that a total of 8000 J of energy be released…

A: Given: Energy, E=8000J Number of generation, N=60 For uranium reproduction constant, k=2.4

Q: _was the first to calculate how much more energy an atom release in radioactive decay that it does…

A: F. Soddy was the scientist

Q: Supposed that a radioactive substance has decayed until only of 1/8 of it remains. How many…

A: let initial number of Nucleons= N0 remaining number of Nucleons= N =N08

Q: Calculate the energy released in joules by a nucleus of uranium-235 if it splits into barium- 141…

A: Total mass before fission and after fission can be calculated as below,

Q: atural Uranium contains 0.7% U - 235. When U - 235 undergoes fission, 200MeV of energy is released.…

A: No. of moles is given as:n=given weightmolecular weight No. of nuclei is given by:N=n×NAwhere NA is…

Q: Why doesn’t uranium ore spontaneously undergo a chain reaction?

A: Given: Uranium chain reaction

Q: Which of the following is the process where the unstable nucleus loses energy by emitting radiation?…

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Q: In a nuclear fission reaction, which has more mass, the initial uranium or its products?

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Q: The ruins of the Chernobyl reactor are enclosed in a huge concrete structure built around it after…

A: The Chernobyl nuclear reactor is a closed reactor which is situated in Ukrain. The ruins of this…

Q: Find the energy released in the fusion reaction

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Q: The Canadian CANDU reactor uses natural uranium, with the moderator consisting of heavy water…

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Q: By natural radioactivity, U-238 emits an alpha particle. The heavy daughter nucleus is called…

A: In alpha decay, the atomic number of the daughter nucleus will be less than that of the parent…

Q: When boron -11 (B) is bombarded with alpha particles a new nucleus is formed and a neutron is…

A: The correct answer is A. B511 + H24e= N714 + n01 Reason: two physical quantities are needed to be…

Q: What are some of the reasons that plutonium rather than uranium is used in all fission bombs and as…

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Q: Complete the following equation for fission by giving the number of neutrons that are produced:…

A: given fission reaction U92236→L57142a+B3590r+x n01

Q: Choose the BEST answer to the following. If an iron nucleus split in two, its fission fragments…

A: Iron has a most stable nucleus in the present elements; therefore, for the fission reaction of iron,…

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.