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If the age of the Earth is 4.5 billion years and the half-life of 40K is 1.26 billion years what percent of the Earth's original amount of 40K remains today?
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∙ 11y ago
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Wiki User
∙ 11y ago
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What is the half life of uranium 238 if 85.719 percent of any given amount remains after 1 billion years?
Natural uranium contain 0,7204 % uranium 235.
Is it false that dinosaur footprints are original remains?
Yes, it is false that dinosaur footprints are original remains.
Why are original remains seldom found?
Because weathering and erosion wear it down.
What can rock fossils and original remains show about earths rock?
it can show a rocks age and what it has gone through
How much mass does the Sun lose through fusion reactions during its 10-billion-year life Simplify the problem by assuming the Sun and energy output remains constant.?
About 4 million tons (4 billion kg) a second. You can calculate the number of seconds in 10 billion years, and multiply that.
How old is a rock for which you determine that 55 percent of the original uranium-238 remains while the other 45 percent has decayed into lead?
3.88 billion years
How many Percent does the original remains of the Philippine Forest have?
20 percent of the original remains of the Philippine forest
After one half-life what percent of the original uranium remains?
By definition, 50%. Half life is the time for half of the original sample to decay.
What is the half life of uranium 238 if 85.719 percent of any given amount remains after 1 billion years?
Natural uranium contain 0,7204 % uranium 235.
Is it false that dinosaur footprints are original remains?
Yes, it is false that dinosaur footprints are original remains.
What is halflife about?
Half-life is the time it takes for one half of the radioactive material to decay. It is logarithmic, so after two half-lives, one quarter remains - then one eighth - etc.
When you move a file a copy of the file remains in the original location?
The original only remains in its original location when the copy command is used. The move command would move the original to a new location.
A sample of radioactive isotope has a halflife of 1 day how much of the original sample will be left at the end of the fourth day?
If a sample of radioactive material has a half-life of one week the original sample will have 50 percent of the original left at the end of the second week. The third week would be 25 percent of the sample. The fourth week would be 12.5 percent of the original sample.
How are the original remains of shells bones and teeth of animals and fish formed into fossils?
Mineralization occurs in the original remains, inside the shells bones and teeth, of animals and fish. This process turns remains into fossils.
What are the original remains of small insects preserved in?
amber
After three half-lives what fraction of a radioactive sample remains?
1/8 of the original amount remains.
In what year were the remains of the original Globe Theatre found?
The remains of the Globe Theatre in London were discovered in 1989.
