The manufacturer of a smoke alarm decides that the smallest s currentof α radiation he can detect is 1.00 µA . (a) Find the activity in curies of an α emitter that produces a 1.00 µA current of α particles. (b) What is unreasonable about this result? (c) What assumption is responsible?

Q: Two 13.3 mg radium tubes are arranged in a line with their centers 5.5 cm apart. A weaker source is…

A: Decay constant for radium λ=0.006 day-1 mass of radium m=226.03 g/mol A=13.3 mg distance

Q: A sample has a ¹4C activity of 0.0052 Bq per gram of carbon. (a) Find the age of the sample,…

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Q: Q6. When a slab of material is inserted between a collimated 60ºCo source and a detector, it is…

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Q: Ionizing radiation enters a Geiger tube with 1.45 MeV of energy. As the radiation passes through the…

A: Given, The energy of Geiger radiation, E=1.45 MeV The energy required by each ion pair, Ei=30 eV

Q: Calculate the activity of a pure 9.5-μgμg sample of 32 over 15P (T1/2=1.23×106s).

A: Mass of sample (m) = 9.5 ×10-6 grams Molecular mass of P-32 = 32 grams Half life (T1/2) = 1.23×106…

Q: chamber reads 90% of the incident radiation. The pressure is decreased by a factor of 10. What…

A: When the pressure inside the chamber is decreased by a factor of 10, the ionization reading will…

Q: A 5,560 Ci 60 Co source used for cancer therapy is considered too weak to be useful when its…

A: Given, The activity of  C60o used for cancer therapy = 5,560 Ci = R0 The reduced activity of C60o…

Q: One problem with x rays is that they are not sensed.Calculate the temperature increase of a…

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Q: The point source Co-60 emits gamma with energies of 1.17 MeV and 1.33 MeV. Each of these energies…

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Q: The counter scale of ionization chamber ranges from zero to 250 particles per second If you know…

A: Given that,The counter scale of Ionization chamber ranges from zero to 250 particles per…

Q: The manufacturer of a smoke alarm decides that the smallestcurrent of α radiation he can detect is…

A:

Q: A patient swallows a radiopharmaceutical tagged with phosphorus-32 (P), a B¯ emit- ter with a…

A: Concept: To determine the Number of Electrons emitted in 15 days we have to calculate the No. of…

Q: Consider 6 µg of 210 Po. (a) What is the rate in disintegrations per sec? (b) What is the energy of…

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Q: What would account for the similarities/differences in initial penetrating ability of alpha (e.g…

A: Alpha emission :     If the unstable nucleus has much higher number of neutrons (n) than the number…

Q: Control rods are usually made of an alloy of indium. The absorption cross-section of indium for…

A: Given data: Thickness (t) = 1 cm σ=71 barnρ=7.31 g/cm3 Need to determine the neutron transmission…

Q: A mouse has a thickness of approximately 20mm. Assume the mouse is completely composed of the ICRU4…

A: Given: In this question, the given details are, A mouse has a thickness of approximately 20mm.…

Q: 1.86 O Hl 20% | 2:39 PM K/s iv. What exposure time is required for an equivalent dose of 200 rem? B.…

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

Q: Monoenergetic 2 MeV photons are incident on water. A piece of bone (p = 1.85 g/cc) 1.2 cm thick is…

A: Given data, Energy of photon E=2 MeV. Thickness of bone = 1.2 cm. Density of bone d=1.85 g/cc. Depth…

Q: Pulse-combustion furnaces can be cost-effective in very cold climates or homes with high heating…

A: It is completely different from conventional energy furnaces. it is considered as the most energy…

Q: Calculate the fraction per square mm area of 7.7MeV alpha particle scattered at 45degrees from a…

A: Solution attached in the photo.......

Q: 71 A 20 mCi gamma source emits 0.200 Mev photons 65% of the time and 0.750 Mey photons 35% of the…

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Q: Unreasonable ResultsThe manufacturer of a smoke alarm decides that the smallest current of α…

A: Given: The smallest current of alpha radiation is I=1.00 μA.   (a) The alpha particles have the…

Q: Calculate the current produced when alpha particles (10 MeV) pass through a gas in ionization…

A: rate of particles = 600 particles / h = 600 /3600    particles/ second = 1/6  particles/ second   We…

Q: Ionizing radiation enters a Geiger tube with 1.30 MeV of energy. As the radiation passes through the…

A: Given Data: The energy in the Geiger tube is, E=1.30 MeV The energy of each ion pair is, E'=30 eV…

Q: A group of radiobiologists asked you to design a shield to irradiate a sample of cell culture with…

A: The range (L) of beta in cm may be evaluated by using the following expression:   L=Rρ   Here, R is…

Q: Estimate the average range of 1.31 MeV alpha particles striking an aluminum slab parallel to its…

A: The given information in the question is: The energy of the alpha particles: 1.31 MeV The density…

Q: Radioactive Pm-147 decays by the release of a beta-particle with an average energy of 62.0 keV. A…

A: Given That: Radioactive pm147, Atomic mass is 147 amu. To find the mass of each atom:…

Q: A 267-rad dose of radiation is administered to a patient in an effort to combat a cancerous growth.…

A: d= 267 rad dose Cw=4186 J/kgoC m=0.25 kg

Q: If you were to use a collimator with a shielding factor of 20 for a RED (radiation exposure device)…

A: if we were to Use A Collimator With A Shielding Factor Of 20 For A RED (radiation Exposure Device)…

Q: Suppose a particle of ionizing radiation deposits 1.0 MeV in the gas of a Geiger tube, all of which…

A: Part (a) The current produced can be calculated as below, Here n is the number of ion pairs…

Q: (Internal Exposure: Internal Radiation Dose) Given a 20µCi of 32P (T/2 = 14.3 days) is delivered…

A: GIven: 20μCi of P32  Half time, t12=14.3 days 70 kg Biological half-life, 19 days…

Q: d). A nuclear physicist works in a lab 5 days per week. He set his timing from 9AM to 3PM in first…

A: With regard to time, radiation exposure has a linear relationship, which means that the more time…

Q: About 35 eVeV is required to produce one ion pair in air. One of the two definitions of roentgen is…

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Q: Ps) What is the closest distance a 7.5 MeV alpha particle can reach when incident na gold foil?

A: Given:  Energy of alpha Particle=7.5MeV To find: Closest Distance alpha particle can reach when…

Q: The manufacturer of a smoke alarm decides that the smallest current of a radiation he can detect is…

A: