-
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
Discuss the differences between taste and flavor, including how other sensory inputs contribute to our perception of flavor.
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Omeprazole
Cimetidine / Tagament
For the complicated once ulcer - kit
Patrick
what is the function of lymphatic system
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include:
1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
Anatomy is the identification and description of the structures of living things
Kamara
what's the difference between anatomy and physiology
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
what is enzymes all about?
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
how does the stomach protect itself from the damaging effects of HCl
little girl okay how does the stomach protect itself from the damaging effect of HCL
Wulku
it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
Kamara
function of digestive system
function of digestive
Ali
what is the normal body temperature
please why 37 degree selcius normal temperature
Mark
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body
the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
Stephanie
anaemia is the decrease in RBC count hemoglobin count and PVC count
Eniola
what is the pH of the vagina
how does Lysin attack pathogens
Diya
I information on anatomy position and digestive system and there enzyme
anatomy of the female external genitalia
Organ Systems Of The Human Body (Continued)
Organ Systems Of The Human Body (Continued)
what's lochia albra
Kizito
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.