-
Home
- College physics
- Radioactivity and nuclear physics
- Nuclear decay and conservation
Problems&Exercises
In the following eight problems, write the complete decay equation for the given nuclide in the complete
notation. Refer to the periodic table for values of
.
decay of
(tritium), a manufactured isotope of hydrogen used in some digital watch displays, and manufactured primarily for use in hydrogen bombs.
Got questions? Get instant answers now!
decay of
, a naturally occurring rare isotope of potassium responsible for some of our exposure to background radiation.
Got questions? Get instant answers now!
decay of
.
Got questions? Get instant answers now!
Electron capture by
.
Got questions? Get instant answers now!
decay of
, the isotope of polonium in the decay series of
that was discovered by the Curies. A favorite isotope in physics labs, since it has a short half-life and decays to a stable nuclide.
Got questions? Get instant answers now!
decay of
, another isotope in the decay series of
, first recognized as a new element by the Curies. Poses special problems because its daughter is a radioactive noble gas.
Got questions? Get instant answers now!
In the following four problems, identify the parent nuclide and write the complete decay equation in the
notation. Refer to the periodic table for values of
.
decay producing
. The parent nuclide is a major waste product of reactors and has chemistry similar to potassium and sodium, resulting in its concentration in your cells if ingested.
Got questions? Get instant answers now!
decay producing
. The parent nuclide is a major waste product of reactors and has chemistry similar to calcium, so that it is concentrated in bones if ingested (
is also radioactive.)
Got questions? Get instant answers now!
decay producing
. The parent nuclide is nearly 100% of the natural element and is found in gas lantern mantles and in metal alloys used in jets (
is also radioactive).
Got questions? Get instant answers now!
decay producing
. The parent nuclide is in the decay series produced by
, the only naturally occurring isotope of thorium.
Got questions? Get instant answers now!
When an electron and positron annihilate, both their masses are destroyed, creating two equal energy photons to preserve momentum. (a) Confirm that the annihilation equation
conserves charge, electron family number, and total number of nucleons. To do this, identify the values of each before and after the annihilation. (b) Find the energy of each
ray, assuming the electron and positron are initially nearly at rest. (c) Explain why the two
rays travel in exactly opposite directions if the center of mass of the electron-positron system is initially at rest.
(a)
(b) 0.511 MeV
(c) The two
rays must travel in exactly opposite directions in order to conserve momentum, since initially there is zero momentum if the center of mass is initially at rest.
Got questions? Get instant answers now!
Confirm that charge, electron family number, and the total number of nucleons are all conserved by the rule for
decay given in the equation
. To do this, identify the values of each before and after the decay.
Got questions? Get instant answers now!
Confirm that charge, electron family number, and the total number of nucleons are all conserved by the rule for
decay given in the equation
. To do this, identify the values of each before and after the decay.
Got questions? Get instant answers now!
Confirm that charge, electron family number, and the total number of nucleons are all conserved by the rule for
decay given in the equation
. To do this, identify the values of each before and after the decay.
Got questions? Get instant answers now!
Confirm that charge, electron family number, and the total number of nucleons are all conserved by the rule for electron capture given in the equation
. To do this, identify the values of each before and after the capture.
Got questions? Get instant answers now!
A rare decay mode has been observed in which
emits a
nucleus. (a) The decay equation is
. Identify the nuclide
. (b) Find the energy emitted in the decay. The mass of
is 222.015353 u.
Got questions? Get instant answers now!
(a) Write the complete
decay equation for
.
(b) Find the energy released in the decay.
(a)
(b) 4.87 MeV
Got questions? Get instant answers now!
(a) Write the complete
decay equation for the neutron. (b) Find the energy released in the decay.
(a)
(b) ) 0.783 MeV
Got questions? Get instant answers now!
(a) Write the complete
decay equation for
, a major waste product of nuclear reactors. (b) Find the energy released in the decay.
Got questions? Get instant answers now!
Calculate the energy released in the
decay of
, the equation for which is given in the text. The masses of
and
are 21.994434 and 21.991383 u, respectively.
Got questions? Get instant answers now!
(a) Write the complete
decay equation for
.
(b) Calculate the energy released in the decay. The masses of
and
are 11.011433 and 11.009305 u, respectively.
Got questions? Get instant answers now!
(a) Calculate the energy released in the
decay of
.
(b) What fraction of the mass of a single
is destroyed in the decay? The mass of
is 234.043593 u.
(c) Although the fractional mass loss is large for a single nucleus, it is difficult to observe for an entire macroscopic sample of uranium. Why is this?
(a) 4.274 MeV
(b)
(c) Since U-238 is a slowly decaying substance, only a very small number of nuclei decay on human timescales; therefore, although those nuclei that decay lose a noticeable fraction of their mass, the change in the total mass of the sample is not detectable for a macroscopic sample.
Got questions? Get instant answers now!
(a) Write the complete reaction equation for electron capture by
.
(b) Calculate the energy released.
(a)
(b) 2.754 MeV
Got questions? Get instant answers now!
Questions & Answers
Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
what is the change in momentum of a body?
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
physics, biology and chemistry
this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you.
Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
Got questions? Join the online conversation and get instant answers!
Source:
OpenStax, College physics. OpenStax CNX. Jul 27, 2015 Download for free at http://legacy.cnx.org/content/col11406/1.9
Google Play and the Google Play logo are trademarks of Google Inc.