Introduction To Health Physics
5th Edition
ISBN: 9780071835275
Author: Johnson, Thomas E. (thomas Edward), Cember, Herman.
Publisher: Mcgraw-hill Education,
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Chapter 2, Problem 2.20P
To determine
What is the minimum required power input (in kilowatts) if a cyclotron produces a 100-µA beam of 15-MeV deuterons, if the cyclotron were 100% efficient in converting electrical energy into kinetic energy of the deuterons?
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A typical nuclear fission power plant produces about 1.00 GW of electrical power. Assume the plant has an overall efficiency of 42.0% and each fission produces 200 MeV of thermal energy. Calculate the mass of 235U consumed each day.
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Number
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The fusion reaction shown is part of the proton-proton chain that occurs in the core of the
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Hydrogen: m=1.007825u
Helium 3: m=3.01603u
Helium 4: m=4.00260u
Conversion factors 1u-1.66056x10-27 kg = 931.494 MeV/c².
Calculate the energy given off during this step of the reaction. Give your answer in MeV.
Chapter 2 Solutions
Introduction To Health Physics
Ch. 2 - Two blocks of mass 0.1 kg and 0.2 kg approch each...Ch. 2 - A bullet whose mass is 50 g travels at a velocity...Ch. 2 - Compute the mass of the Earth, assuming it to be a...Ch. 2 - An automobile weighing 2000 kg and going at a...Ch. 2 - A small electrically charged sphere of mass 0.1 g...Ch. 2 - A capacitor has a capacitance of 10F . How much...Ch. 2 - A small charged particle whose mass is 0.01 g...Ch. 2 - Prob. 2.8PCh. 2 - Prob. 2.9PCh. 2 - Prob. 2.10P
Ch. 2 - Prob. 2.11PCh. 2 - Prob. 2.12PCh. 2 - Prob. 2.13PCh. 2 - Prob. 2.14PCh. 2 - Prob. 2.15PCh. 2 - A current of 25 mA flows through a 25-gauge wire,...Ch. 2 - An electron starts at rest on the negative plate...Ch. 2 - Prob. 2.18PCh. 2 - Prob. 2.19PCh. 2 - Prob. 2.20PCh. 2 - Prob. 2.21PCh. 2 - Prob. 2.22PCh. 2 - Prob. 2.23PCh. 2 - (a) A 1000-MW(e) nuclear power plant operates at a...Ch. 2 - Prob. 2.25PCh. 2 - Prob. 2.26PCh. 2 - Prob. 2.27PCh. 2 - The specific heat of water in the English system...Ch. 2 - Prob. 2.29PCh. 2 - Prob. 2.30PCh. 2 - Prob. 2.31PCh. 2 - Prob. 2.32PCh. 2 - How many cubic meters of water must fall over a...Ch. 2 - (a) Calculate the speed of a 25-MeV proton. (b)...Ch. 2 - Prob. 2.35PCh. 2 - Prob. 2.36PCh. 2 - Calculate the speed of a (a) 0.5-MeV electron and...Ch. 2 - How much sub-butuminous coal (20,000 kJ/kg) would...Ch. 2 - Prob. 2.40PCh. 2 - How much oil (138,690 Btu/gal) would it take to...Ch. 2 - How much oil (138,690 Btu/gal) would it take to...Ch. 2 - Prob. 2.43PCh. 2 - Prob. 2.44PCh. 2 - Prob. 2.45PCh. 2 - Prob. 2.46PCh. 2 - Prob. 2.47PCh. 2 - Prob. 2.48PCh. 2 - Prob. 2.49P
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- The energy released by each fission within the core of a nuclear reactor is 2.00×102 MeV. The number of fissions occurring each second is 2.10×1019, Determine the power (in watts) that the reactor generates. Number______ Units_____.arrow_forwardThe energy released by each fission within the core of a nuclear reactor is 2.00 × 102 MeV. The number of fissions occurring each second is 4.10 × 1019. Determine the power (in watts) that the reactor generates.arrow_forwardA Van de Graaff generator produces a 2 MeV beam of deuterons, which are heavy hydrogen nuclei containing a proton and a neutron. 1. 2. If the electric beam current is 10 UA, find the separation distance between the deuterons? a)121 nm b)221 nm c)321 nm d)421 nm e)521 nm Is its electrostratic repulsion a factor in the stability of the has? Explainarrow_forward
- Protons enter a region of electric field where the potential difference between where the protons enter and exit is +5×106 volts (5 MV). Assuming the initial energy of the protons was negligible, how much energy does the proton gain? What if we had a fully ionized carbon-12 nucleus instead?arrow_forwardIn proton beam therapy, a beam of high-energy protons is used to deliver radiation to a tumor, killing its cancerous cells. In one session, the radiologist calls for a dose of 4.9 x 108 protons to be delivered at a beam current of 120 nA. How long should the beam be turned on to deliver this dose?arrow_forwardWhen U-232 undergoes alpha decay to Th-228, a mass lost is sustained. 1. Find the mass defect for this process in amu and kg. 2. The mass lost during the decay is converted to kinetic energy. Use Einstein equation to calculate the kinetic energy in joules and in Mega- electron volts (MeV). The exact mass of U-232 is 232.0372 amu. The exact mass of Th-228 is 228.0287 amu. The exact mass of He is 4.0026 amu. 1 amu= 1.6606 x 10-27 kg. 1 MeV = 1.602 x 10-13 J. 232 92 U -----> 228 90 Th + 4 2 He i have a attached a photo of the question.arrow_forward
- Because the neutron has no charge, its mass must be found in some way other than by using a mass spectrometer. When a neutron and a proton meet (assume both to be almost stationary), they combine and form a deuteron, emitting a gamma ray whose energy is 2.2233 MeV. The masses of the proton and the deuteron are 1.007276467u and 2.013553212u, respectively. Find the mass of the neutron from these data. Could you please break this problem down completely...not just plug and chug. Thanks!arrow_forwardAn alpha particle is accelerated from rest through a potential difference of 35 MV. What is the kinetic energy of the alpha particle, in MeV? Answer:arrow_forwardA radioisotope produces an intensity of 7.52 x 10^4 becquerel (Bq) at a distance of 1.00 cm from the source. What would be the intensity at 12.0 cm? Intensity = ______Bqarrow_forward
- A proton accelerator is operating at 4.5mA. How many nuclei are emitted in the beam every second? (1C=6.24E18 electron charges.)arrow_forwardIf the average energy released in a fission event is 208 MeV, find the total number of fission events required to operate a 60-W lightbulb for 2.0 h.arrow_forwardNuclear power plants convert the energy released in fission reactions to electric energy. Consider one such power plant that generates 1.00 GW of electric power. The fission of each uranium-235 nucleus releases 250 MeV of energy. The power released by the fission reactions is converted to electric power with a 41.0% efficiency. How much uranium-235 per day, by mass in kg, undergoes fission at this power plant?arrow_forward
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