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What is the dominant language of sub-Saharan Africa?
<span>Three of the six dominant languages in Subsaharan Africa—spoken by at least ten million people or more—are spoken in Nigeria: Hausa, Yoruba, and Ibo. The three remaining major languages of Subsaharan Africa are Swahili, Lingala, and Zulu.</span>
Answer:
The age of the rock = 2800.6 million years = 2.8 billion years.
A simple method of analysis similar to Carbon dating is used to obtain the required age of the rock. Radioactive substances decay according to first order reaction kinetics. So, plugging all the required parameters into the general equation for amount of substance left in a first order decay gives us the age of the rock.
Explanation:
Half life of Uranium-235 = 700 million years (from literature)
The decay of radioactive substances follow first order reaction kinetics.
The general equation is given as
A(t) = A₀ e⁻ᵏᵗ
A(t) = Amount of radioactive substance left after a particular time = 6.25%
A₀ = initial amount of radioactive substance = 100%
t = time that has passed since the beginning = age of the rock = ?
k = decay constant
The decay constant is related to the half life (T) through the relation,
k = (In 2)/T
k = (0.693/700) = 0.00099 /million years
A(t) = A₀ e⁻ᵏᵗ
6.25 = 100 e⁻ᵏᵗ
0.0625 = e⁻ᵏᵗ
In e⁻ᵏᵗ = In 0.0625 = -2.7726
-kt = - 2.7726
t = (2.7726/0.00099) = 2800.6 million years
t = 2.8 billion years.
Hope this Helps!!!
There are seven provinces that are either entirely or partially located between 50 N and 60 N.
Explanation:
Canada is a vast country, in fact it is the second largest in the world. The country is located on high latitude, and more than half of its mainland territory is between the latitudes of 50 N and 60 N. The provinces are very large, and each of them is larger than big portion of the countries in the world. In the southern half of the country, the provinces tend to be arranged in an east to west manner, kind of by longitude.
- There are ten provinces in Canada.
- Seven out of the ten provinces are entirely or partially between the latitudes of 50 N and 60 N.
- The provinces located between these latitudes are Newfoundland, Quebec, Ontario, Manitoba, Saskatchewan, Alberta, and British Columbia.
- The three other provinces, Nunavut, North West Territory, and Yukon Territory, are located further north, mostly between 60 N and 70 N.
Learn more about Canada brainly.com/question/2165528 #learnwithBrainly
C. Peninsula. An island is surrounded by water and an archipelago is just a collection of islands.
