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HOT!!! 4 billion years ago, the Earth was still newly re-formed and becoming solid, after the titanic collision with another planet perhaps as large as Mars.There probably wasn't much in the way of atmosphere or surface water. No life at all; that would come a little less than a billion years later.
What else can I help you with?
Assume that the age of the Earth is 4.6 billion years How many half-lives of Potassium-40 does the age of the Earth represent?
Divide 4.6 billion by 1.31x109 which is the half life of Potassium-40 and you will have your answer.
How long will the earth live?
Nobody can tell you exactly. However the word will cease to exist when the Sun expands to become a red giant (at which point the Earth will be inside the Sun). This will happen between 4 and 5 billion years in the future. The Earth has been around for about 3.5 billion years.
A potassium-40 sample starts with 50 atoms and 1.25 billion years later there are 25 atoms. What is the half-life of potassium-40?
1.25 billion years
What is half life of potassium-40?
The half life of potassium 40 is 1.3 billion years.
What is the half life of potassium-40?
The half life of potassium 40 is 1.3 billion years.
What 1 percent of 40 billion?
1 percent of 40 billion = 400 million 1% of 40 billion= 1% * 40 billion= 0.01 * 40 billion= 400 million
What is the half life of Argon 40?
The half-life of Argon-40 is about 1.25 billion years. This means that it takes 1.25 billion years for half of a sample of Argon-40 to decay into its decay products. Argon-40 is commonly used in radiometric dating to determine the age of rocks and minerals.
How many zero's in 40 billion?
* In those countries that use the long scale based on powers of a million, like Europe: 40 billion = 40 × (10^6)^2 = 40 × 10^12 = 4 × 10^13 → there are 13 zeros in 40 billion. * In those countries that use the short scale based on powers of a thousand plus one, like USA: 40 billion = 40 × (10^3)^(2+1) = 40 × (10^3)^3 = 40 × 10^9 = 4 × 10^10 → there are 10 zeros in 40 billion.
A potassium 40 sample starts with 50 atoms and 1.25 billion years later there are 25 atoms What is the half life of potassium 40?
1.25 billion years: 25/50 or half the original atoms have disintegrated in 1.25 billion years, and that is the definition of half life.
How much will the Olympics cost?
In Beijing this year I think that they cost something like 40 billion dollars In Beijing this year I think that they cost something like 40 billion dollars
If a country's debt-to-GDP ratio is currently 5 and its debt is expected to grow from 20 billion dollars to 40 billion dollars in the next 25 years what will the country's GDP have to be in 25 years t?
If the debt-to-GDP ratio is 5, it means that the country's debt is five times its GDP. If the debt is expected to grow to 40 billion dollars in 25 years, then the GDP must be 40 billion dollars divided by 5, which equals 8 billion dollars. Therefore, the country's GDP will need to be 8 billion dollars in 25 years to maintain the same debt-to-GDP ratio.
What are the release dates for Nova - 1974 Australia's First 4 Billion Years Awakening 40-15?
Nova - 1974 Australia's First 4 Billion Years Awakening 40-15 was released on: USA: 10 April 2013
