Answer:
V = 6644.7 cubic meters to the nearest 1/10th
Explanation:
The volume of a cube is
V = s*s * s more commonly written as
V = s^3
So s = 18.8
V = s^3
V = 18.8 * 18.8 * 18.8
V = 6644.672
V = 6644.7 to the nearest 1/10 th.
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!!!
Answer:Ethnoprimatology
Explanation: Ethnoprimatology is a term used to describe the interaction and interconnection between human and non human primates, Ethnoprimatology is known to also focus on the ecological and cultural interconnection between humans and non human primates, it is a broad field of study and has been extensively explored to enhance the understanding of the kinds of interaction that connects humans and nonhuman primates.
