After 1.374 seconds, 7.50 grams of an original 60 gram sample remain. 3 points What is the half-life of the sample? 0.916 s , 0.458 s , 15.0 s , 0.246 s

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

increased stability in the completion of fluorine's outer shell.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.