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: The number of radioactive nuclei present at the start of an experiment is 3.52 x 1015. The number…
A:
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: The disintegration rate of certain radioactive substance at any instant is 4750 disintegrations per…
A: To find- Half life (T)=?Given-N0=4750N1=2700t=5 min
Q: A research reactor, after going critical for the first time, operates at a power level of 100 W for…
A:
Q: A Geiger counter registers a count rate of 8,000 counts per minute from a sample of a radioisotope.…
A: Activity A=A0e-0.693tT12AA0=e-0.693tT12lnAA0=-0.693tT12T12=-0.693tlnAA0 =-0.69324 minln1000…
Q: A Geiger- Mueller counter registers an initial reading of 3200 counts while measuring a radioactive…
A:
Q: An unknown radioactive element decays into non-radioactive substances. In 360 days the radioactivity…
A:
Q: ing on a Geiger counter at 155 cm from a radiation source was 7.620 x 10^3 counts per minute (cpm).…
A: Given:- The distance of the Geiger counter from radiation sourced = 155 cm The reading of the…
Q: . A multiplying medium has a neutron population of 1.0 x 1012 neutrons per cubic centimeter at time…
A:
Q: ay, 4 days/week, 40 week pe eutrons. What is the total
A: Given: A radiation worker works four hours per day,4 days/week. 40 week per year receives 0.2 m…
Q: A thyroid cancer patient is given a dosage of 131I (half-life = 8.1 d). What fraction of the dosage…
A:
Q: 12. A point source of 5-MeV y-rays with intensity 3 x 103 y-rays/cm2- sec is shielded with 50 cm of…
A: Given: The energy of the Gamma-rays is E = 5 MeV The intensity of the point source is I0 = 3 x 103…
Q: Question 1. There are four factors: A, B, C, D. We assume that each replicate was considered as a…
A: Yate's Algorithm: Note: X=factorial effect X and total SSX=sum of squares due to X=X232…
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: The dose equivalent is given by
Q: Q10: Using a nuclear counter the count rate of emitted particles from a radioactive source is…
A: Given value--- at t = 0 , count rate = 1600 count/s. after 6 second , count rate = 100 count/s. We…
Q: unknown radioactive element decays into non-radioactive substances. In 480 days the radioactivity of…
A:
Q: Manganese-52 has a half-life of 6 days. How many days would a scientist have to wait for the…
A: The radioactivity decay of a sample has a relationship given by:Nt=N0e-λt………(1)where,N0 is the total…
Q: A building has become accidentally contaminated with radioactivity. The longest - lived material in…
A: Formula to calculate the time when the activity equals 10 counts/min is,
Q: A Geiger counter registerss a count rate of 6,800 counts per minute from a sample of a radioisotope.…
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: We use a Geiger counter to measure RT, the total counting rate (in counts per minute) due to a…
A:
Q: A radioisotope was injected in the human body. The half-life of the radioisotope is T/2 = %3D 6…
A: Given: T1/2=6 hours
Q: During a 2-h period of radiation therapy, alpha radiation is deposited into a patient's body at a…
A: time period (T) = 2 hr rate of deposition = 3.3×10-8 Jsmass of patient (m) = 59 kg radiation type :…
Q: Lead shield that is 0.27 mm thick is equivalent to 1 HVL. How thick should the lead shield be if the…
A: Lambert's law states that the intensity of the radiation (I) falls exponentially as the thickness…
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: A cancerous tumour is exposed to an a-emitter with an RBE of 16. What absorbed dose, in Gy, is…
A: RBE of 16. 64 Sv
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 patient is injected 465 MBq of radioactive isotopes with a half life of 110 minutes. How much…
A: Given: Half life, T=110 min=6600 s Radioactive injected in a body, N0=465 MBq Let's find the…
Q: Two radioactive substances A and B initially contain equal number of atoms. The half lives of A and…
A:
Q: A Geiger counter reading of a radioactive sample is initially 7020 counts per minute. The same…
A:
Step by step
Solved in 2 steps
