Suppose that you want to find out how much gasoline is in an underground storage tank. You pour in 1 gallon of gasoline that contains some radioactive material with a long half-life that gives off 5000 counts per minute. The next day, you remove a gallon from the underground tank and measure its radioactivity to be 10 counts per minute. How much gasoline is in the tank?

Q: An accident in a laboratory results in a room being contaminated by a radioisotope with a half-life…

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Q: A drug prepared for a patient is tagged with 4399Tc, which has a half-life of 6.05 h. The dose…

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Q: A thyroid cancer patient is given a dosage of 131 I (half-life=8.1 d) What fraction of the dosage of…

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Q: A cobalt-60 source with activity 2.6 *10^-4 Ci is embedded in a tumor that has mass of.0.20kg. The…

A: Since there are multiple sub-parts posted, we will answer the first three sub-parts for you. If you…

Q: A thyroid cancer patient is given a dosage of 131I (half-life = 8.1 d). What fraction of the dosage…

A: The objective of the question is to find out the fraction of the dosage of Iodine-131 that will…

Q: 14. Iodine-131, a beta emitter, has a half-life of 8 days. A 2-gram sample of initially pure…

A: Note: Since you have asked multiple questions, we will solve the first question for you. If you want…

Q: a general rule, the radioactivity from a particular radioisotope is considered to be reduced to a…

A: Radioactivity from a particular radioisotope is considered to be reduced to a safe level after 10…

Q: You go to the doctor and he gives you 13 milligrams of radioactive dye. After 24 minutes, 7.75…

A: Given, An initial dose of the dye, N0=13mg After 24 minutes 7.75mg of the dye remains.…

Q: For a fission reaction, 1.92 x 1016 J of energy is released. What is the mass defect in kg?

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Q: Which of the following radioactive doses would deliver the most energy to a patient? Dose A delivers…

A: Given;- A delivers 6 mrad with an RBE of 3, dose B delivers 9 mrad with an RBE of 2, and dose C…

Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half-life = 5 730 yr)…

A: Determine the number of carbon molecules per mole. Determine the initial number of atoms of C-14.

Q: A radioactive sample of 60Co (t₁/2 = 5.271 y) has a ß- activity of 4.4 X 107 Bq. How many grams of…

A: When the number of protons and neutrons inside a nucleus is not balanced some nuclei will become…

Q: You are hired as an expert witness for the defense of an employee who is being sued for exposing his…

A: The initial number of oxygen atoms   Half-life time,   The time interval,

Q: A 70-kg worker is accidentally exposed for 2.0 minutes to a 21-mCi source of beta radiation from a…

A: (a) Let M, T, and R denote the person’s mass, the time for exposure, and the radioactive sample’s…

Q: For the radioactive isotope strontium-90, k is 2.47 x 10-2 years -1. If the original amount of…

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Q: A 70kg patient is injected with 2.0 x 1013 atoms of Tc99m for a nuclear medicine imaging study.…

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Q: A living specimen in equilibrium with the atmosphere contains one atom of 14C (half- life = 5 730…

A: In this question we have to find the age of the given sample in the nearest year. Please give…

Q: an element with initial mass 1 kg started radioactivity in 2021 , in which year the element will…

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Q: A building has become accidentally contaminated with radioactivity. The longest-lived material in…

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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.