Modified Mastering Physics without Pearson eText-- Instant Access -- for Physics for Scientists & Engineers with Modern Physics
5th Edition
ISBN: 9780134402659
Author: GIANCOLI, Douglas
Publisher: PEARSON
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Chapter 36, Problem 39P
To determine
The amount of mass lost in the fission.
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(III) The americium nucleus, ?5Am, decays to a neptunium
nucleus, 2Np, by emitting an alpha particle of mass
4.00260 u and kinetic energy 5.5 MeV. Estimate the mass
of the neptunium nucleus, ignoring its recoil, given that the
241
americium mass is 241.05682 u.
(II) An alpha particle (which is a helium nucleus, Q = +2e,
m = 6.64 × 10-27 kg) is emitted in a radioactive decay with
5.53 MeV. What is its speed?
KE
When a uranium nucleus at rest breaks apart in the process known as fission in a nuclear reactor, the resulting fragments have a total kinetic energy of about 200 MeV. How much mass was lost in the process?
Chapter 36 Solutions
Modified Mastering Physics without Pearson eText-- Instant Access -- for Physics for Scientists & Engineers with Modern Physics
Ch. 36 - You are in a windowless car in an exceptionally...Ch. 36 - You might have had the experience of being at a...Ch. 36 - Prob. 3QCh. 36 - Does the Earth really go around the Sun? Or is it...Ch. 36 - If you were on a spaceship traveling at 0.5c away...Ch. 36 - The time dilation effect is sometimes expressed as...Ch. 36 - Does time dilation mean that time actually passes...Ch. 36 - Prob. 8QCh. 36 - If you were traveling away from Earth at speed...Ch. 36 - Do time dilation and length contraction occur at...
Ch. 36 - Discuss how our everyday lives would be different...Ch. 36 - Explain how the length contraction and time...Ch. 36 - The drawing at the start of this Chapter shows the...Ch. 36 - Prob. 16QCh. 36 - Can a particle of nonzero mass attain the speed of...Ch. 36 - Prob. 18QCh. 36 - If mass is a form of energy, does this mean that a...Ch. 36 - Prob. 20QCh. 36 - Is our intuitive notion that velocities simply...Ch. 36 - (II) A friend speeds by you in her spacecraft at a...Ch. 36 - (I) Suppose in Fig. 3611 that the origins of S and...Ch. 36 - (II) An unstable particle is at rest and suddenly...Ch. 36 - Prob. 37PCh. 36 - Prob. 39PCh. 36 - (II) How much energy can be obtained front...Ch. 36 - Prob. 47PCh. 36 - Prob. 55PCh. 36 - A spacecraft (reference frame S) moves past Earth...Ch. 36 - As a rough rule, anything traveling faster than...
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- A muon has a rest mass energy of 105.7 MeV, and it decays into an electron and a massless particle. (a) If all the lost mass is converted into the electron's kinetic energy, find for the electron. (b) What is the electron's velocity?arrow_forwardOne cosmic ray neutron has a velocity of 0.250c relative to the Earth. (a) What is the neutron's total energy in MeV? (b) Find its momentum. (c) Is Epc in this situation? Discuss in terms of the equation given in part (a) of the previous problem.arrow_forwardThe power output of the Sun is 3.85 1026 W. By how much does the mass of the Sun decrease each second?arrow_forward
- (a) Beta decay is nuclear decay in which an electron is emitted. If the electron is given 0.750 MeV of kinetic energy, what is its velocity? (b) Comment on how the high velocity is consistent with the kinetic energy as it compares to the rest mass energy of the electron.arrow_forward. If the relativistic kinetic energy of a particle is 9 times its rest energy, at what fraction of the speed of light must the particle be traveling?arrow_forwardEnergy reaches the upper atmosphere of the Earth from the Sun at the rate of 1.79 1017 W. If all of this energy were absorbed by the Earth and not re-emitted, how much would the mass of the Earth increase in 1.00 yr?arrow_forward
- If the rest energies of a proton and a neutron (the two constituents of nuclei) are 938.3 and 939.6 MeV, what is the difference in their mass in kilograms?arrow_forwardGold (Au) nuclei are accelerated to a totalenergy of2 GeV per nucleon, as measured in lab reference frame.Each Au nucleus contains 197 nucleons (nucleon refers to proton or neutron). The mass for a nucleon is assumed to be 1 amu (atomic mass unit), which has a rest mass of 931.5 ????2⁄.(a) What is the speed of each Au nucleus? (b) What is the momentum of each Au nucleus?arrow_forward(ii) Two Rockets, each 10000 cm long when they are measured at rest, move toward each other with speeds of 0.9c with respect to the earth (where c is the speed of light). (a) How long is each Rocket as measured by the observer on the earth? (b) Using velocity addition formula how fast is traveling each rocket as calculated by an observer on one of the rockets? (c) How long is one rocket when measured by an observer on one of the rockets?arrow_forward
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