Answer:
It´s because of the lack of the gravity factor that´s present on the surface of Earth. This makes bodies and objects so light and they practically float in the station´s interior. Earth´s gravity is simply weaker the further you are from it.
Explanation:
There is a large period of time in which the French and Portuguese colonized Africa. The natives took on those languages, which influenced the culture.
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:The largest ocean in the world - the Pacific Ocean - is ten times bigger than the smallest one - the Arctic Ocean.
Explanation:
Answer:
Abiotic resources are resources that are non living. Examples of abiotic factors are air, water, sunlight, soil, and minerals. Biotic resources is a type of natural resource derived from the biosphere as opposed to abiotic resource from non-living things. Supplement. Examples of biotic resources are forests, animals, birds, fish, and marine organisms.
Explanation:
