Answer:
200 million years
Explanation:
The equation that describes the decay of a radioactive isotope is
where
is the amount of radioactive isotope left at time t
is the initial amount of isotope
is the half-life of the sample
In this problem, the ratio between unstable isotope and daughter isotope is 1:15; this means that
Because the "total proportion" of original sample was 1+15=16.
Also we know that the half-life is
So we can re-arrange the equation to find t, the age of the rock:
So, 200 million years.
The answer should be flammability
The labyrinthodont lived in Antarctica. It is a reptile and extinct amphibians subclass, known as the very first vertebrates to walk on land. In the mountains of Antarctica in the Transantarctic during the austral summer, in 1969-1970 bones of Lower Triassic vertebrates were excavated. It includes the labyrinthodont amphibian.
Answer:
A battery is made up of three parts. The Cathode (positive end +) , the Anode (negative end -) and the electrolyte. The electrolyte allows electrical charges to travel between the cathode and anode. This chemical reactions creates the flow of electricity supplying the electrical voltage potential to power a circuit.
Typical materials of a battery are as follows
- Anode most often is made of zinc
- Manganese dioxide acting as Cathode.
- the electrolyte between and inside contains ions
Explanation:
Answer:
Explanation:
As per energy conservation we know that
initial total gravitational potential energy = final spring potential energy
so we have
also we know that maximum acceleration will be 5.3 g
so it is given as
so we have
