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☆☆☆☆☆Radioactive dating is a technique used to find how old an object is.
One such example is potassium-argon dating, where potassium decays into argon. The proportion of potassium to argon suggests how old the object in question is.
An equation used is t = (1/c)Ln(1+(D/P)) Where c is the decay constant D is number of daughter atoms (number decayed) P is the number of parent atoms (number undecayed) t is the age of the object.
Another common technique in dating an object is carbon dating. Because the amount of carbon-14 has remained roughly constant through time on the earth it is possible to calculate the age of an object by finding the proportion of carbon-14 to carbon-12.
There is a suspicion that the relative abundance of carbon-14 could be changing due to the thinning of the ozone layer. The amount of carbon-14 depends on the amount of radiation permeates the ozone and thus the amount could be changing. Not proven, only a hypothesis.
Accuracy radioactive dating is called radiometric dating. This is taught in biology.
It is n=4 because Br is in the 4p valence shell.
There are three beta decay modes for 40K, and so three equations.
The equation for the negative beta decay of 40K: 1940K --> 2040Ca + -10e
where the -10e represents a beta particle or electron.
The equation for the positive beta decay of 40K: 1940K --> 1840Ar+ 10e
where the 10e represents a positive beta particle or positron.
The equation for the decay of 40K by electron capture is:1940K + -10e --> 1840Ar + ve
There isn't any. The skinniest trace of light, so weak that the human eye can't
detect it, and the mightiest torrent of light from an exploding star, all travel at
the same speed, as long as the comparison is made in the same material.
Likewise, light with the lowest frequency/longest wavelength and light with the
highest frequency/shortest wavelength ... the properties that really determine the
energy carried by the light ... all have the same speed, as long as the comparison
is made in the same material.
Gluons bind together the quarks that make up protons and neutrons.
It has a very long half-life. Disposal of radioactive waste is the biggest problem. Proper disposal is essential to ensure protection of the health and safety of the public and quality of the environment including air, soil, and water supplies.
The fans sitting in the bleachers
If you know the frequency of a light wave, you can tell the wavelength, the
color it'll appear to your eye, and the energy in each photon of the light.
The energy of the wave ~APEX
How much heat it takes to raise the temperature
The solvent molecules bump into the solid more often.
C(s)+O2(g) yields CO2(g)+393.5kJ
C6H12O6
I know the answer because I am smarter than all of you
