A 60Co source is labeled 4.00 mCi, but its present activity is found to be 1.85 X 107 Bq.What is the present activity in mCi? Data from the appendices and the periodic table may beneeded for these problems.

A 60Co source is labeled 4.00 mCi, but its present activity is found to be 1.85 X 107 Bq.What is the present activity in mCi? Data from the appendices and the periodic table may beneeded for these problems.

Modern Physics

3rd Edition

ISBN:9781111794378

Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer

Chapter14: Nuclear Physics Applications

Section: Chapter Questions

Problem 12Q

See similar textbooks

Related questions

Q: Consider the nuclei 11750Sn. Determine its mass defect in kilograms if its atomic mass is 116.992…

Q: A drug tagged with 4399Tc (half - life = 6.05 h) is prepared for a patient. If the original activity…

A: Formula to calculate the activity of the drug after 2.0 h is,

Q: A researcher is using Radium-226 with an activity of 3 Rad per hour. What the thickness of lead…

A: Radium-226 emits mostly gamma rays. Therefore, we are using below given equation. In this equation,…

Q: Cow’s milk produced near nuclear reactors can be tested for as little as 1.00 pCi of 131 I per…

Q: Calculate (in MeV) the binding energy per nucleon for (a) 14N, (b) 56Fe, and (c) 207Pb.

A: The expression for the Binding energy, EB=Zmn+Nmn-matom931.49 MeV/u The binding energy per…

Q: Bismuth-210 has a half-life of 5.01 days. The activity of a bismuth-210 sample at the start is 100…

A: Write the expression for the remaining quantity. Here, N0 represents the initial activity, t…

Q: Find the nuclear radii of the alpha particle ????.

Q: he Q value for the alpha decay of 203Tl is calculated to be 0.91 MeV from the masses of the initial…

A: Given data: Q value of alpha decay, E=0.91 MeV Atomic number of 203Tl ,Z=81 Applying Geiger Nuttal…

Q: Find the radius of a nucleus of (a) 24He and (b) 23892U.

A: a)Radius of the nucleus is given by

Q: Q6: A fission reactor accident evaporates 5 x 10° Ci of 9Sr (T1/2 27.7 yr) into the air. The 90Sr…

Q: Find the energy emitted in the beta negative decay of 60Co .

A: Write the equation for the beta negative decay of cobalt-60 (60Co). Co60→Ni60+β-+neutrino

Q: hat m

A: Given Number of Gamma rays over a period of 1 day (n)=1.16×1011…

Q: The 210^Po source used in a physics laboratory is labeled as having an activity of 1.0 microCurie on…

A: a) It is given that initial activity is, Ao=1×10-6 Ci=3.70×104 Bq

Q: a. Alpha decay: "C → yields 12

A: When alpha particle decays, the atomic number decreases by 2 and atomic mass decreases by 4.

Q: A radiation detector records 8700 counts in 1.00 min. Assuming that the detector records all decays,…

A: a) The required activity in Becquerel unit,

Q: Gama decay: 39 yields K 19

Q: What is the activity, in Bq and Ci, of 1.0 g of 226Ra? Marie Curie was the discoverer of radium; can…

A: The unit of activity is Curie. It is defined as the activity of 1 g 226Ra.

Q: A piece of radium has an activity of 92 mCi. (a) What is the mass of the radium?

A: Given: The activity of the radium is 92 mCi. The molecular mass of the radium is 226.

Q: A drug tagged with 9943Tc (half-life = 6.05 h) is prepared for a patient. If the original activity…

Q: What is the mass of 60 Co in a cancer therapy transillumination unit containing 5.00 kCi of 60 Co ?

A: The expression for the mass,

Q: Consider the nuclei 11750Sn. Determine its mass defect in kilograms if its atomic mass is 116.95…

Q: The ceramic glaze on a red-orange Fiestaware plate is U2O3 and contains 50.3 grams of 238U, but very…

Q: Taking into account the recoil (kinetic energy) of the daughter nucleus, calculate the kinetic…

Q: The New Horizons spacecraft, launched in 2006, spent 9.5 years on its journey to Pluto. It derives…

Q: Natural potassium contains 40K, which has a half-life of 1.277 ✕ 109 y. What mass (in g) of 40K in a…

Q: The purpose of producing 99Mo (usually by neutronactivation of natural molybdenum, as in the…

Q: A wooden artifact is found in an ancient tomb. Its carbon-14 (14/6C) activity is measured to be…

Q: Beta decay: 128 yields Te 52

Q: A 5000-Ci60Co source used for cancer therapy is considered too weak to be useful when its activity…

A: The ratio of the activity is an exponential function of decay activity and the time period. The time…

Q: What is the activity (in particles/s) of a sample of Carbon-14 that contains 9.070E+21 nuclei?

A: Half life of C-14 (t1/2) = 5730 years N = 9.070 x 1021 As we know, Activity (A) = 0.693 N/t1/2…

Q: What mass of 24Na produces the needed 5.0-mCi activity, given its half-life is 15.0 h?

A: The formula for the half-life is given by, Here, λ represents the decay constant.

Q: A proposed nuclear reactor facility will have an electrical power output of 908 MW with a 31.3%…

A: efficiency=output powerinput power=electrical powernuclear power Here electrical power=908 MW &…

Q: The decay constant for 133Xe is 0.13 d-1 . What is the half-life and average life?

A: Given: The decay constant is 0.13 d-1.

Q: Large amounts of 65 Zn are produced in copper exposedto accelerator beams. While machining…

A: Express the activity of 65Zn in Bq

Q: A drug tagged with 9943Tc (half-life = 6.05 h) is prepared for a patient. If the original activity…

Q: The body of a stone-age man was found in a glacier in 1997. The body was dated using radiocarbon…

A: Given Half period , t(1/2) = 5840 years Initial activity , Ro = 0.25 Bq Final activity , R =…

Q: A radioactive material has an activity of 250mCi and has a half-life of 12 hours. At 1.95mCi…

Q: The β− particles emitted in the decay of 3H (tritium) interact with matter to create light in a…

Q: One of the fusion reactions that takes place as a star ages is called the triple alpha process. 3…

A: Mass defect ∆m = Z.mp + A-Z. mn-M ...........(1) Where M= mass of the atom Binding energy = (∆m).…

Q: The half-life of 198Au is 2.7 days. Calculate, (a) The decay constant, l (b) The activity…

Concept explainers

Nuclear Reactions

Nuclear reactions are processes in which the fundamental characteristics of a nucleus changes. They change into a completely different nucleus. These processes occur naturally in an unstable nucleus. Bombarding an energetic particle can induce nuclear reactions. In this article, both the naturally occurring nuclear reactions are termed as radioactive decay and the induced nuclear reactions are further categorized as nuclear fission and nuclear fusion.

Question

A ⁶⁰Co source is labeled 4.00 mCi, but its present activity is found to be 1.85 X 10⁷ Bq.What is the present activity in mCi?

Data from the appendices and the periodic table may be
needed for these problems.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Data from the appendices and the periodic table may be needed for these problems. (a) Calculate the activity R in curies at 1.00 g of 226Ra. (b) Discuss why your answer is not exactly 1.00 Ci, given that the curie was originally supposed to be exactly the activity of a gram of radium.
Tritium is naturally rare, but can be produced by the reaction n+2H3H+. How much energy in MeV is released in this neutron capture?
(a) Write the complete a decay equation for 249Cf. (b) Find the energy released in the decay.
Data from the appendices and the periodic table may be needed for these problems. A 60Co source is labeled 4.00 mCi, but its present activity is found to be 1.85107Bq. (a) What is the present activity in mCi? (b) How long ago did it actually have a 4.00—mCi activity?
Large amounts of 65Zn are produced in copper exposed to accelerator beams. While machining contaminated copper, a physicist ingests 50.0 Ci of 65Zn. Each 65Zn decay emits an average ray energy of 0.550 MeV, 40.0% of which is absorbed in the scientist’s 75.0kg body. What dose in mSv is caused by this in one day?
(a) How many 239Pu nuclei must fission to produce a 20.0kT yield, assuming 200 MeV per fission? (b) What is the mass of this much 239Pu?
(a) Background radiation due to 226Ra averages only 0.01 mSv/y, but it can range upward depending on where a 226Ra in the 80.0kg body of a man who receives a dose of 2.50mSv/y from it, noting that each 226Ra decay emits a 4.80MeV particle. You may person lives. Find the mass of neglect dose due to daughters and assume a constant amount, evenly distributed due to balanced ingestion and handily elimination. (b) Is it surprising that such a small mass could cause a measurable radiation dose? Explain.
(a) Find the total energy released in MeV in each carbon cycle (elaborated in the above problem) including the annihilation energy. (b) How does this compare with the protonproton cycle output?
A beam of 168MeV nitrogen nuclei is used for cancer therapy. If this beam is directed onto a 0.200kg tumor and gives it a 2.00Sv dose, how many nitrogen nuclei were stopped? (Use an RBE of 20 for heavy ions.)
(a) A cancer patient is exposed to rays from a 5000Ci 60Co transillumination unit for 32.0 s. The rays are collimated in such a manner that only 1.00% of them strike the patient. Of those, 20.0% are absorbed in a tumor having a mass of 1.50 kg. What is the dose in rem to the tumor, it the average energy per decay is 1.25 MeV? None of the s from the decay reach the patient. (b) Is the dose consistent with stated therapeutic doses?