1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years.
waht can cause my left arm to cramp and numbness in my left fingertips
7 years. They had to sign a contract and if they left before the end of it they could be arrested.
2 years, Watch the movie 2012 and you will know!
Left ventricle is not a layer, dip head! The appropriate answer would be the myocardium.
After 5 half-lives, 3.125% of the original carbon-14 would remain. Each half-life reduces the amount by half, so after 5 half-lives, it would be reduced by a factor of 2^5 = 32.
you would have no money left
scientists use carbon14 and potassium argon to find absolute age of rock
After 10740 years, half of the sample would have decayed, so there would be 200 atoms left. If the original sample had 400 atoms, then there would be 200 atoms left in the sample after 10740 years.
Since that is close to its half-life, about half the original quantity will be left.
.....Probaly Not
Left alone, that investment would be worth 705.79 after four years.
There would be 1/32 left.
One eighth would be left.
If a McDonald's burger was left out for 10 years, it would likely become dried out, moldy, and decomposed. The bread and meat would lose moisture and break down, while mold and bacteria would likely grow on the surface. Overall, the burger would not be safe to eat and would be inedible.
1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years.
Suppose a scientist has the remains of some animal that lived hundreds or thousands of years ago. The animal would have incorporated carbon-14 into its bodily tissues only whilst it was alive. After the animal died this carbon-14 would have started to decay radioactively at a known rate. Meanwhile, let us assume for the sake of simplicity that the fraction of carbon-14 around us at any given time is constant. Let us now suppose that the carbon-14 level in the dead animal proves to be about 50% of today's level. You will recognise this as the half-life of carbon-14! 5700 years. What really happens though is that we can't measure (at least we can't easily measure) the amount of carbon-14 in the dead animal. What we can measure is how much radioactivity from carbon-14 can be detected in the dead animal. Knowing that we can calculate how much carbon-14 is left compared to total carbon and therefore how many carbon-14 half-lives have passes since the animal died. (If half of the 14C is gone then the animal died about 5700 years ago, if 3/4 is gone then another 5700 years beyond that have passed, and so on.) Put another way, without knowing the half-life aka as rate of decay we couldn't turn remaining radioactivity into years.