Lead-209, a radioactive isotope, decays to nonradioactive lead over time. the half-life of lead-209 is 8 days. suppose that 20 milligrams of lead-209 are created by a particle physics experiment. write an equation for the amount of lead-209 present t days after the experiment

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

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.