The Republic of Korea. (Check my source of the World Cancer Research Fund first.)
<u>Question</u>:
Which value is being measured in the columns labeled "Fraction remaining” and "Percentage remaining”?
-
years of decay
- quantity of energy
- number of stable atoms
- amount of material that has not decayed
<u>Answer</u>:
"Amount of material that has not decayed" being measured in the columns labelled "Fraction remaining” and "Percentage remaining”
<u>Explanation</u>:
The table shown below having explains about the half life , the amount of sample in both fraction and percentage. The first column named half life elapsed tells us the the number of half life that that is completed. Half life is the time taken for an element to reduce or decay into half of its initial amount.
The fraction remaining column gives the amount of sample that is left behind after the half life particular number of half life has completed. similarly the percentage remaining column gives the amount of sample in percentage. For example, the 5th row tells us that after 4 half life is over
of the sample remained. In percentage it is 6.25%
You would expect a scratch on the quartz since quartz is on a hardness scale of 7 and the mineral you are rubbing against it is at a hardness scale of 7.5
Cells are impossible to see with the naked eye
The two most common hypotheses that theorise the formation of life-supporting molecules on earth would be the Miller-Urey experiment and the meteorite phenomenon. In the meteorite theory, it is said that life on earth began when meteorites containing life-supporting molecules bombarded the planet that eventually caused lifeforms to grow.