Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.
Answer:
The right answer is A.
Explanation:
His Holiness the Dalai Lama is the spiritual leader of Tibet and the main figure of Tibetan Buddhism. He was also the head of the local government until the Chinese took military control of Tibet in the 1950s. He escaped to India where he has been living as an exile since then, heading a government in exile. Tenzin Gyatso (his actual name) got the Nobel Prize for Peace in 1989.
Its a type of clay and is used for houses in other countries.
Humans tend to congregate and form settlements around areas that are rich with natural resources such as forests and rivers, because these locations support life and the economy.
Answer:
A group of people who have the power to make and enforce laws for a country or area is called government.
