Radioactivity: What is the order of magnitude of the age of a 40-year-old person in seconds?
Q: Density is the ratio of mass to volume. If a uranium nucleus has a radius of 7.4 femtometers and…
A: Given data:- The radius of the uranium nucleus is r = 7.4 femtometers. The nuclear mass of the…
Q: A film badge worn by a radiologist indicates that she has received an absorbed dose of 3.3 x 10-7…
A: 1 Gy of absorbed radiation means = 1Jole of energy absorbed per 1 Kg OR 100 erg of energy per…
Q: A 73.0 kg person experiences a whole-body exposure to alpha radiation with an energy of 1.50 MeVMeV.…
A:
Q: A Geiger- Mueller counter registers an initial reading of 3200 counts while measuring a radioactive…
A:
Q: Krypton-81m (81mKr) is a radioactive isotope with a half-life of 13.1 s that is often used in…
A: The correct option is (e) 50.26 s
Q: . A multiplying medium has a neutron population of 1.0 x 1012 neutrons per cubic centimeter at time…
A:
Q: Sodium-24 is a radioisotope used for examining circulation. a. Write a balanced nuclear equation for…
A: The radioactivity equation is N = No12n where, No is the initial number of atoms, N is the atoms…
Q: At the beginning of an experiment, a scientist has 164 grams of radioactive goo. After 135 minutes,…
A:
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: unknown radioactive element decays into non-radioactive substances. In 480 days the radioactivity of…
A:
Q: A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope.…
A: A Geiger counter registers a count rate of N0 = 8000 per minute. After time t = 10 minutes, the…
Q: In 1991, two hikers in the Alps, between Italy and Austria, discovered the remains of a…
A:
Q: If a rock containing U-238 initially reads 41.2 counts per minute on a Geiger counter, what will its…
A: The reading after 6 weeks will be 41.2 counts per minute
Q: opper-63 has a nucleus mass of 62.92959 u. Its atomic number is 29, and its atomic mass number is…
A:
Q: 15. An 85 kg person was exposed to a gamma source and received a whole body dose of 0.5 Sv. How much…
A:
Q: What is the Decay Rate (k), if the Half Life is 10.5 days?
A:
Q: The counting rate from a radioactive source is 4000 counts per second at time t=0. After 10 seconds,…
A: We know that activity is N=N0e-λt and T1/2=ln2λ=0.693λ Using the above formula the problem can be…
Q: The magnitude of the rate of decay of a radioactive material is 0.47 times the square of the amount…
A: Note: answer and explanation is given in step 2 in image format..
Q: A Geiger counter reading of a radioactive sample is initially 7020 counts per minute. The same…
A:
Q: Radioactive Decay Curve for Arsenic-79 100 75 25 Time (min) Based on the above graph, what is the…
A:
Q: Geiger counter reading of a radioactive sample is initially 7220 counts per minute. The same sample…
A: Given: The initial amount is 7220 counts per minute. The final count is 422 counts per minute. The…
Q: A radiation worker stands 50 cm away from a radioactive source of 25 mCi 57Co. Calculate the…
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: f a vial contains 600 MBq of indium-111 (In-111) at 12:30 (14 June 2014), how much radioactivity…
A:
Q: A 73.0 kg person experiences a whole-body exposure to alpha radiation with energy of 1.50 MeVMeV. A…
A: Given problem is based on the dosimetry. Absorbed dose is defined as, the amount of energy deposited…
Q: Geiger counter reading of a radioactive sample is initially 6520 counts per minute. The same sample…
A: Given:Initial count rate, N0 =6520 count/minFinal count rate, N = 422 count/mintime, t = 10.1 hr
Q: One method for determining the age of ancient objects is by radiocarbon dating. Natural processes…
A:
Q: A Geiger counter reading of a radioactive sample is initially 6520 counts per minute. The same…
A:
Q: There was a sample of 500 milligrams of a radioactive substance to start a study. Since then, the…
A:
Q: building has become accidentally contaminated with radioactivity. The longest-lived material in the…
A: Answer is 1685.2 years
Q: A radioactive sample is analyzed to give a total of 4000 counts; background gives 250. How many…
A: The total count of radio active sample is given as, N=4000 counts. The single count value is given…
Q: A radioisotope has a half-life of 5.0 days. The activity of a radioisotope sample prepared ten days…
A:
Q: A Geiger counter reading of a radioactive sample is initially 7420 counts per minute. The same…
A:
Q: The radioactive glucose used in PET scans has a half-life of approximately 2 hours. How much of the…
A: Half life (t) of radioactive glucose= 2 hours Time period (T) = 8 hours Let the original amount of…
Q: You find a 37.2 g fossilized bone that has an activity of 0.024 counts per second. How old is the…
A: A living matter has 1.3×10-10 % of C-14, and the half-life of C-14 is 5730 years. Thus, determine…
Q: The decay of a radioactive material has a count rate is 2000 decays/min. Four hours later, the decay…
A: Given that:N0=2000 decays/minN=500 decays/minTime t=4 hours
Step by step
Solved in 2 steps
