Modern Physics
3rd Edition
ISBN: 9781111794378
Author: Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 15.7, Problem 3E
To determine
The threshold energy for the given reactions.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Part A
Nuclear reactors generate power by harnessing the
energy from nuclear fission. In a fission reaction,
uranium-235 absorbs a neutron, bringing it into a
highly unstable state as uranium-236. This state
almost immediately breaks apart into two smaller
fragments, releasing energy. One typical reaction is
140 Xe +94 Sr + 2,n,
What is the reaction energy Q of this reaction? Use c? = 931.5 MeV/u.
Express your answer in megaelectron volts to three significant figures.
235
92
3%U+n→
• View Available Hint(s)
54
38
where in indicates a neutron. In this problem,
assume that all fission reactions are of this kind. In
Hν ΑΣφ
fact, many different fission reactions go on inside a
reactor, but all have similar reaction energies, so it
is reasonable to calculate with just one. The
products of this reaction are unstable and decay
shortly after fission, releasing more energy. In this
problem, you will ignore the extra energy
contributed by these secondary decays.
Q :
MeV
Submit
You will need the…
Part A
Compute the energy released in the fission reaction
n+ 239 Pu → 137 Xe+ 100 Zr + 3n
Atomic mass of 137 Xe is 136.911562 u, atomic mass of 100 Zr is 99.91776 u, and atomic mass of 239 Pu is 239.052157 u.
Express your answer in megaelectron volts.
ΔΕ
MeV
Submit
Request Answer
I Review | Constants | Periodic Table
In a student lab experiment, 5.8 MeV alpha
particles from the decay of 210P0 are directed at a
piece of thin platinum foil.
Part A
If an alpha particle is directed straight toward the nucleus of a platinum atom, what is the distance
of closest approach?
Express your answer with the appropriate units.
µA
?
Imin =
Value
Units
Chapter 15 Solutions
Modern Physics
Ch. 15.6 - Prob. 2ECh. 15.7 - Prob. 3ECh. 15 - Prob. 1QCh. 15 - Prob. 2QCh. 15 - Prob. 3QCh. 15 - Prob. 4QCh. 15 - Prob. 5QCh. 15 - Prob. 6QCh. 15 - Prob. 7QCh. 15 - Prob. 9Q
Ch. 15 - Prob. 10QCh. 15 - Prob. 11QCh. 15 - Prob. 12QCh. 15 - Prob. 14QCh. 15 - Prob. 15QCh. 15 - Prob. 16QCh. 15 - Prob. 17QCh. 15 - Prob. 18QCh. 15 - Prob. 1PCh. 15 - Prob. 2PCh. 15 - Prob. 3PCh. 15 - Prob. 4PCh. 15 - Prob. 5PCh. 15 - Prob. 6PCh. 15 - Prob. 7PCh. 15 - Prob. 8PCh. 15 - Prob. 9PCh. 15 - Prob. 10PCh. 15 - Prob. 11PCh. 15 - Prob. 12PCh. 15 - Prob. 13PCh. 15 - Prob. 14PCh. 15 - Prob. 15PCh. 15 - Prob. 16PCh. 15 - Prob. 17PCh. 15 - Prob. 18PCh. 15 - Prob. 19PCh. 15 - Prob. 20PCh. 15 - Prob. 21PCh. 15 - Prob. 22PCh. 15 - Prob. 23PCh. 15 - An unstable particle, initially at rest, decays...Ch. 15 - Prob. 25PCh. 15 - Prob. 26PCh. 15 - Prob. 27PCh. 15 - Prob. 28PCh. 15 - Prob. 29PCh. 15 - Prob. 30PCh. 15 - Prob. 31PCh. 15 - Prob. 32PCh. 15 - Prob. 33PCh. 15 - Prob. 34PCh. 15 - Prob. 35PCh. 15 - Prob. 36P
Knowledge Booster
Similar questions
- Part B hp How much energy is released by the explosive separation of the two stages? Express your answer with the appropriate units. E = Submit U Value Provide Feedback μA P Pearson Request Answer Units c. All rights reserved. | Terms of Use | Privacy Policy | Permissions Contact Us | W ? ان و ENG Dė Review Next > 5: 2/15arrow_forward#8 Once the protons get sufficiently close together, the repulsive force of Question #3 is overwhelmed by a much stronger attractive force. The two protons fuse together into an extremely short-lived and unstable isotope known as helium-2. Which fundamental force holds this nucleus together? Explain your reasoning. #9 The newly-formed nucleus would be much more stable if one of the protons could transform itself into a neutron. Fortunately, it can-and it does! One of the "up" quarks inside the proton turns into a "down" quark, releasing a positron and a neutrino in the process. What's left is a nucleus of hydrogen-2, also known as a deuteron. Which fundamental force is responsible for this transformation? Explain your reasoning.arrow_forwardPart A An example of the neutron absorption reaction is on + 19,B → Li + {He. Calculate the reaction energy Q. The rest masses of each particle in atomic mass units ( u) are in = 1.008665 u, 1B = 10.012937 u, Li = 7.016004 u, He = 4.002603 u, Express your answer in megaelectron volts. • View Available Hint(s) 5 ΑΣφ ? where 1 u = 1.660539 × 10–27 kg. Q. = MeVarrow_forward
- ItemView?assignmentProblemID=150282761&offset3Dnext Homework 7 - Magnetic Field and Forces Exercise 27.21 A deuteron (the nucleus of an isotope of hydrogen) has a mass of 3.34x10-27 kg and a charge of 1.60×10-19 C. The deuteron travels in a circular path with a radius of 7.50 mm in a magnetic field with a magnitude of 2.20 T Part A Find the speed of the deuteron. να ΑΣφ m/s Submit Request Answer Part B Find the time required for it to make - of a revolution. t = Submit Request Answer a P Type here to searcharrow_forward4G 4G. 10:26 ll l Von 87 Chegg Expert Hiring experthiring.cheggindia.com Subject Test Note: - You are attempting question 2 o The Hamiltonian of a particle having mass m in one dimension is described by H = L+-mox +2µx. What is the difference between the energies of the first two 2m 2 levels? 2µ? (а) ho- (b) ħo+ µ (c) ho (d) ho+ mo Answer OA OB OD Submitarrow_forwardExercise 4 Problem 4.15 A hydrogen atom starts out in the following linear combination of the stationary states n = 2, 1 = 1, m 1 and n 2, 1 1, m = -1: 1 V(r. 0) = (211+ V21-1). (a) Construct (r, t). Simplify it as much as you can. (b) Find the expectation value of the potential energy, (V). (Does it depend on r?) Give both the formula and the actual number, in electron volts.arrow_forward
- PROBLEM 1 What is the force of the horizontal rod in kN when the system is in equilibrium.. Determine the magnitude of W in kN so that the rod will be horizontal when the system is in equilibrium. PROBLEM 2 What is the reaction at A in kN? What is the reaction at B in kN? What is the reaction at C in kN? What is the reaction at D in kN?arrow_forwardH.W Determine the angle (0) and the normal reaction (N) between the cylinder and the smooth horizontal surface in the following figure. 100ON 50ON 学不年學 玲搭冷 玲玲arrow_forwardQuestion 1 The sun generates its energy through nuclear fusion, making helium from hydrogen. The main process by which this happens, called the proton-proton chain, goes as follows: • Two protons come together to create deuterium, a positron, a neutrino, and energy: p + p→D+e++v+ energy • The deuterium fuses with another proton to make ³He: D + p→→ ³He + energy • Fianlly, 4He is produced by fusing two ³He nuclei together: ³He + 3 He→ 4He+p+p+ energy What is the total energy released during the creation of one 4He nucleus? Give your answer in MeV, and remember that you need to make two ³He nuclei in the process. Be sure to use at least five significant figures for your masses, but your final answer should have three or four sig figs. Question 2 Nuclear medicine often uses radioactive samples as a tracer to monitor processes inside the body. Suppose a nuclear reactor makes a certain isotope sample with an initial activity of 152 mci, and the sample gets delviered to a hospital 16.5 hours…arrow_forward
- Part A What is the velocity, as a fraction of c, of a proton with 600 GeV total energy? Hint: This problem uses relativity. ? a x X•10n •C <8 18arrow_forwardTask 3 a. If the Pressure produced by the gas cylinder of the motor of the rocket is governed by the below equation: P = sin* (V)cos³ (V) And the energy is given by: •V2 W = PdV V1 If V2=2V1, Find W. What will be W if V2=4V1. i. ii. iii. Use Matlab or excel to plot the Energy in the interval [0,21]arrow_forwardI Review I Constants During most of its lifetime, a star maintains an equilibrium size in which the inward force of gravity on each atom is balanced by an outward pressure force due to the heat of the nuclear reactions in the core. But after all the hydrogen "fuel" is consumed by nuclear fusion, the pressure force drops and the star undergoes a gravitational collapse until it becomes a neutron star. In a neutron star, the electrons and protons of the atoms are squeezed together by gravity until they fuse into neutrons. Neutron stars spin very rapidly and emit intense pulses of radio and light waves, one pulse per rotation. These "pulsing stars" were discovered in the 1960s and are called pulsars. Part A = 2.0 x 1030 kg) and size (R 3.5 x 10° m) of our sun rotates once every 35.0 days. After undergoing gravitational collapse, A star with the mass (M the star forms a pulsar that is observed by astronomers to emit radio pulses every 0.100 s. By treating the neutron star as a solid sphere,…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Modern PhysicsPhysicsISBN:9781111794378Author:Raymond A. Serway, Clement J. Moses, Curt A. MoyerPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Modern Physics
Physics
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College