<span>Landforms affect climate by altering the wind and rate of evaporation, which can cause changes in the temperature, humidity and precipitation of a region</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!!!
<span>The ruler Sargon of Akkad Semitic-speaking Akkadian Empire, united the geographic areas of northern and southern Mesopotamia. His empire included most of the regions of Mesopotamia. He conquesed Mesopotamia and added it to his reign. </span>
The farthest distance can about 401 million km.
Answer:
The economic system in question is the command economic system.
Explanation:
There are multiple different types of economic systems across the world, and of them is the command economic system. This economic system is typical for communist societies. It has reached its peak in popularity during the second half of the 20th century, but since the 1990's it has experienced a sharp decline and is now practiced in much fewer countries.
The command economy is an economic system that is fully controlled by the government. The government owns all of the resources and facilities. It is making plans for how much, what, when, and at what price goods will be produced. People have very limited choices and often lack certain goods that are very important.
