1) how old is a bone in which the carbon-14 in it has undergone 8 half-lives?
select one:
a. 45600
b. 91200
c. 91200
d. 11400
2) in the process of radiocarbon dating, the fixed period of radioactive decay used to determine age is called the
select one:
a. exponent.
b. half-life.
c. isotope.
d. nucleus.
3) a certain byproduct in nuclear reactors, 210po, decays to become 206pb. after a time period of about 276 days, only about 25% of an original sample of 210po remains. the remainder has decayed to 206pb. determine the approximate half-life of 210po.
select one:
a. 138 days
b. 276 days
c. 414 days
d. 552 days

1) How old is a bone in which the Carbon-14 in it has undergone 8 half-lives?

Using the graph form the picture you count 8 times the halving of C¹⁴ and you arrive at 45600 years.

2) In the process of radiocarbon dating, the fixed period of radioactive decay used to determine age is called the half-life.

3) A certain byproduct in nuclear reactors, 210Po, decays to become 206Pb. After a time period of about 276 days, only about 25% of an original sample of 210Po remains. The remainder has decayed to 206Pb. Determine the approximate half-life of 210Po.

What the problem is telling you is that at 276 days only 25% original sample remains. If you divide the number of days by two the quantity of original sample will be multiplied by two, and you will have 138 days and 50% of original sample. This is the answer because the the half-life of a isotope is the time in which 50% of original quantity of radioactive atoms will disintegrate.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

am i too late?

explanation: