Answered: If 6 Gy of 250 kV x-rays kills 30% of…

If 6 Gy of 250 kV x-rays kills 30% of tumor cells, and 4 Gy of a neutron beam kills the same percent of tumor cells, the RBE of the neutron beam is equal to 0.5 2.5 O4 1.5

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: How much radiation doses (in rads) is deposited in the body if 8.5 J of energy from radiation is…

A: Given data: The energy absorbed is E=8.5 J. The mass of the person in m=85 kg.

Q: How did you go from MgH= 1/2MV^2+1/2(2/5Mr^2)(v/r)^2 to gH=v(1/2+2/10)?

Q: What is the KHe + K, kinetic energy of the 3.2e-13 reaction products (helium nucleus plus photon)? X…

Q: The β-particles emitted in the decay of 3H (tritium) interact with matter to create light in a…

A: Given- Activity (A) = 15.0 Ci = 15.0 Ci×1 Bq2.73×10-11Ci=5.49×1011Bq Half life of Tritium (t1/2)=…

Q: Is this beta decay shown here possible: μ+ → e- + vo + v μ?

Q: Uranium-238 decays into lead-206. The Q value for the entire chain is 51.7 MeV and the decay…

A: In some nuclear decay, an alpha particle is released by the parent nucleus. This kind of decay is…

Q: The table shows two isotopes of potassium and two isotopes of calcium. 39K 42K Stable B-decay…

A: GivenMass of electron (me) = 0.000549 uMass of proton (me) = 0.000549 uMass of neutron (me) =…

Q: If a 1.90 cm thick piece of lead can absorb 90.0% of the γ rays from a radioactive source, how many…

Q: If a reactor produces an average power of 1000 MW for a year, how much 235 U is used up assuming 200…

A: Energy produce in a year - Number of fission -

Q: A person with lymphoma receives a dose of 35 Gy in the form of γ radiation during a course of…

A: a) The energy absorbed is given by, b) It is given that the energy absorbed is 1% of the total…

Q: A 6.0\times 10−2 kg tumor is treated with a high-energy proton beam. If the equivalent dose…

A: Approach to solving the question:Please see attached photos for the detailed solutions. Thank you.…

Q: In terms of biological damage, how many rad of heavy ions are equivalent to 100 rad of x - rays?

A: Write the expression for the biological damage caused by the X-rays with a quality factor of 1.

Q: Ihalf of the human population within 30 days of exposure each this dose. Assume that at the surface…

A: lethal dosage = 425 rem dosage in rem=number of rad × RBE (RBE of photons=10) we convert the doage…

Q: The H isotope of hydrogen, which is called tritium (because it contains three nucleons), has a…

A: When there is an unbalance in the number of protons and neutrons inside an atomic nucleus they…

Q: A scientist working near an improperly shielded y-ray source would receive an equivalent dose of 4.0…

A: When the scientist works in an improperly shielded gamma source, he receives a dose of X0=4.0 mSv…

Q: The fission of a single nucleus of 235U releases 200 MeV of energy. What is the number of fissions…

A: Given Data: The energy released during single fission is, E = 200 MeV. The power required is, P = 1…

Q: The radio-active decay reaction is given by e¯+e* →y+y . Calculate the wavelength of y photon…

Q: Prove that A(t) = Age-at using the concept of radioactive decay law.

A: Solution:-Given that

Q: The fusion reaction shown is part of the proton-proton chain that occurs in the core of the sun.

Q: 90% of No radioactive atoms decay in one hour. What is the half-live? What is the decay constant…

Q: 10. A person with lymphoma receives a dose of 35 Gy in the form of y radiation during a course of…

A: The energy absorbed by the tissue is

Q: A person with lymphoma receives a dose of 35 Gy in the form of y radiation during a course of…

Q: How many calendar years (= exactly 365 days) can a 5.75 W LED lamp light up with 0.853 kg deuterium…

A: Given The amount of deuterium m = 0.853 kg Energy from one deuterium E = 0.823 MeV Power of the LED…

Q: If you start at t = 0 a decay rate of r = 10,000 Cs -137 decays per second, how many decays per…

Q: An energy of 30.0 eV is required to ionize a molecule of the gas inside a Geiger tube, thereby…

A: Energy required to ionize one molecule, E = 30.0 eVTotal energy, Et = 0.65 MeV = 0.65×106 eVMaximum…

Q: In a radioactive substance at t = 0, the number of atom is 8 x 104 . its half-life period is 3 yr.…

Q: An 85 kg radiation worker accidently ingest 1.0 mg of Po211. Assume that Po211 resides in the body…

A: The decay constant for Po211 can be calculated as below, Here τ is the half-life of Po211.

Q: Used in carbon dating, the carbon isotope 1C is radioactive. It decays according to the equation c-N…

A: here given a equation we need to find element

Q: nuclear/ radioactive decay may be best expressed as Group of answer choices N = No e-1/λλt No = N…

Q: A sample of hypothetical element X decays by positron emission and has a half-life of 79 years. How…

Q: During an experiment 30% of a tissue is damaged by 8Gy of 250keV energy X-ray. The same damage is…

A: Let the RBE of protons be (RBE)p then,8Gy×1 =3Gy×(RBE)p ⇒(RBE)p ⇒83 ⇒2.67

Q: 5. What is the energy released in this 3+ nuclear reaction Cl →S +e? (The atomic mass of Cl is…

A: The energy released in a nuclear reaction can be calculated using the mass-energy equivalence…

Concept explainers

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.

Question

Yellow spot
If 6 Gy of 250 kV x-rays kills 30% of tumor
cells, and 4 Gy of a neutron beam kills the
same percent of tumor cells, the RBE of the
neutron beam is equal to *
0.5
2.5
1.5

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

3:01 1 4 7 +/- Question 7 of 12 The half-life of element X is 500 years. If there are initially 8 g of X, how much will remain after 1500 years? 2 5 8 3 60 9 O g Submit Tap here or pull up for additional resources XU x 100
Trace amounts of 7Li were created during Big Bang Nucleosynthesis. Calculate the binding energy per nucleon for 7Li, in MeV showing two decimal places. Values: atomic mass of 7Li = 7.01600 u atomic mass of 7H = 1.00783 u atomic mass of a neutron = 1.00867 u
A radioactive sample of an isotope with a half-life of 24 hours has an activity of 3×10^5 Bq when delivered to a physics lab. What is the activity of this isotope exactly 14 hours later when it is to be used in an experiment?
A person with lymphoma receives a dose of 35 Gy in the form of γ radiation during a course of radiotherapy. Most of this dose is absorbed in 18 g of cancerous lymphatic tissue. (a) How much energy is absorbed by the cancerous tissue? (b) If this treatment consists of five 15 minute sessions per week over the course of 5 weeks and just 1% of the γ photons in the γ ray beam are absorbed, what is the power of the γ ray beam? (c) If the γ ray beam consists of just 0.5% of the γ photons emitted by the γ source, each of which has an energy of 0.03MeV, what is the activity (in Ci) of the γ ray source?
Q6: A fission reactor accident evaporates 5 x 106 Ci of ⁹0Sr (T1/2= 27.7 yr) into the air. The 90Sr falls out over an area of 104 km². How long will it take the activity of the ⁹0Sr to reach the agriculturally "safe" level of 2 uCi/m².
(a) Suppose 6/ 3 Li is struck by an alpha particle, releasing a proton and a product nucleus in the reaction. What is the product nucleus? (b) An alpha particle and a product nucleus are produced when 9 / 4 Be is struck by a proton. What is the product nucleus?
Neutron probes are used in agronomy to measure the moisture content of soil. A pellet of 241 Am emits alpha particles that cause a beryllium disk to emit neutrons. These neutrons move out into the soil where they are reflected back into the probe by the hydrogen nuclei in water. The neutron count is thus indicative of the moisture content near the probe. What is the energy of the alpha particle emitted by the 241^Am? Answer in megaelectron volts
The technique of carbon-14 dating relies on the assumption that the cosmi-ray intensity has been constant for at least the last 50,000 years. Suppose it was discovered that the cosmic-ray intensity was much greater 10,000 years ago. How would this discovery the ages of samples that have already been dated?