When the nuclear half-life of the radioactive isotope is showing the time needed for the isotope to be half of its initial value of mass.
so with each half-life, the isotope will be halved of its initial value as example:
after the first half-life, the isotope will lose 50 % of its initial value
and after the second half-life, the isotope will lose 25% of its initial value
and after the third half-life, the isotope will lose 12.5 % of its initial value
and so on,
So here to get how many numbers of half-lives we will use this formula:
numbers of half-lives = total time passed / the half-life of the isotope
= 30 days / 14 days
=2 days
∴remainig mass = initial mass / 2^numbers of half-lives
= 10 g / 2^2
= 2.5 g
Answer:
Hey kimalonzo59!
· Calculate specific heat as c = Q / (mΔT). In our example, it will be equal to c = -63,000 J / (5 kg * -3 K) = 4,200 J/ (kg·K). This is the typical heat capacity of water.
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Yu I got a bill for the day I got it off the store I was going like I don’t know if it got it back in my
Answer:
No, only the wiehgt, because the gravitational pull on the two, are diffrent. 3kg on the moon may be 6kg here on earth. but in the end, the rock still holds however much rock it held in the begining.
Explanation:
The urinary system filters and gets rid of waste from the body.
