In preparation for an MRI scan, why are patients advised to remove sunglasses, jewellery, watches and other metal objects?

Q: Lead-214 releases both an alpha and a beta particle. What element results and what is its mass…

A: Beta particle is similar to the emission of an electron and alpha particle is similar to the…

Q: A sample containing I-131 has an activity of 6.40 × 108 Bq. How many days later will the sample have…

A:

Q: Do humans receive more radiation from artificial or from natural sources of radiation?

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Q: What happens when beta radiations are passed through amagnetic field?

A: When beta radiations are passed through a magnetic field they will get deflected by the magnetic…

Q: Using the data shown in the table, calculate the path radius of the Ca+ ion. 0.089 Ca+ path radius:…

A:

Q: What patterns and insights are gained from an examination of the binding energy of various nuclides?

A: Binding energy is the amount of energy needed to detach a particle from a particle system or to…

Q: A batch of I-125 seeds is ordered so that the activity will be 0.48 mCi/seed on the day of the…

A: activity (A) = 0.48 mCi t = 5 days half life of I-125 = 60 days

Q: Which of the following is a form of natural radioactivity that would be deflected by a magnetic…

A: Anything that contains charge will experience magnetic force when it passes magnetic field. X rays…

Q: hromium-51 is used in imaging red blood cells and has an effective half-life of 27 days.   If a dose…

A: Given: The half-life time of the red blood cell is 27 days. The initial activity is 24 μCi. The…

Q: Fluorine-18 (F-18) is a commonly used radionuclide for PET scans. The half-life of F-18 is 110 min.…

A: Part (a): Let A0 denote the initial activity of the FDG solution. The volume of the FDG solution is…

Q: Consider the following data from the analysis of mercury using cold vapor atomic a spectrometry:…

A: GivenS=1.09 CHg+0.298

Q: Why does a chain reaction not occur in uranium mines?

A: Naturally occurring uranium has 99.3 % of U-238 and 0.7% of U-235. Only the 0.7% of U-235 is…

Q: A 2.0-keV deuteron passes undeviated through a velocity selector with a magnetic field of 40 mT.…

A: F = magnetic force acting on a moving charge particle = q(V × B)  v = speed vector B = magnetic…

Q: The amount of meat in prehistoric diets can be determined by measuring the ratio of the isotopes 15N…

A:

Q: N-type sample has minority carrier concentration of 10^1/m ^3 , if ni=2.5×10^1m ^3 , the majority *…

A:

Q: If a vial contains 600 MBq of iodine-123 (I-123) at 12:30 (14 June 2019), how much radioactivity…

A: It is given that

Q: A radionuclide has an initial activity of 2.00 x10" dis/min, after 4.0 day its activity is 9.0 x 10…

A:

Q: What is beta particle?

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Q: A neutron undergoes beta decay. If the emitted beta particle moves along north-west direction in a…

A: In an neutron decay we have the nuclear reaction as: n = p+ + e- + ϑ Here we have a negative beta…

Q: What are the masses of sulfur’s two most dominant isotopes?  Which ones are capable of generating…

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Q: If a vial contains 400 MBq of fluorine-18 (F-18) at 12:00 on 20 March 2019, how much radioactivity…

A: The half-life of F-18 is 109.7 minutes. The time difference between the starting time and end time…

Q: Which is a factor in determining the amount of radiation exposure a person takes from a source?

A: The human gets exposure to the radiation by the radiation emitted by the nuclear power generation…

Q: Technetium-99 m has a half life of 4.8 hours. If a patient receives a dose with an activity of 60.2…

A: Given data :          Half life (t1/2) = 4.8 hours          Dose received (N0) = 60.2 mCi…

Q: Some types of MRI can produce images of resolution and detail similar to PET. Though the images are…

A: MRI and PET produces image of internal organ but there is some slight difference between both…

Q: In preparation for an MRI scan, why are patients advised to remove eyeglasses, watches, jewelry, and…

A: MRI means magnetic resonance imaging.

Q: A patient with thyroid cancer is given a sample of lodine-131 which has a half-life of 8 days. If…

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Q: Write down the condition and equation which must be satisfied if the ions are to emerge from the…

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Q: Technetium-99m is very useful in diagnostic imaging since it has a short effective half-life of 4.8…

A: 1 Ci = 3.7 × 1010 decay/s Initial activity = 41.6 mCi Half life T1/2  = 4.8 hrs Total time t = 72…

Q: If the half-life of actinium-227 is 21.8 years, approximately how much time will be required to…

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Q: Q1) lodine I is widely used in the treatment and diagnosis of the Thyroid gland. The radius (in fm)…

A: Please note : As per answering guidelines I can answer the 1st question only. Since, this is not a…

Q: If Th-234 emits a beta particle, what nucleus is formed?

A:

Q: The decay of a current is given by the relationship  i = Ie^(-Rt/L) Calculate the charge decay…

A: Given Current,  I=0.3A Resistor, R=130Ω  Inductor, L=1.4H Decay time between t=0  and 0.1s

Q: A sample containing l-131 has an activity of 6.40 x 10° Bq. How many days later will the sample have…

A:

Q: The radiation effects which can be passed on to the offspring or to a later generation of a person…

A: Different radiations carry different energy and momentum and thus the effects of different…

Q: PET scans often show an artificially high level of radioactivity in the lungs.

A: Solution

Q: A singly-ionized methane atom (mass of 2.66×10-26 kg) follows the dotted path shown when sent into a…

A: Given: R = 54 cm = 0.54 mL = 0.6 mN = 5900 loopsB = 9 T To find: Current run through the coils of…

Q: the particle responsible for radioactivity :

A: The process by which an unstable atomic nucleus loses energy by radiation is called radioactivity.…

Q: How many half lives must pass for a substance to lose 87.5% of its original amount? Group of answer…

A: N(t)=No(0.5)t/h h=half life N(t)=100-87.5=12.5 No = 100

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.