The relationship of radiation with distance obeys the inverse square law. Therefore, doubling the distance decrease the radiation by a factor of 4. The new count is 250. 1) Applying the same principle, the count decreases by a factor of 100. The new count is 10 2) An alpha particle is 4He2 and the Hydrogen can be represented as 1H1 14N7 + 4He2 - 1H1 = 17X8 Proton number 8 belongs to Oxygen. Therefore, the resultant nucleus is: 17O8 3) 185Au79 - 4He2 = 181Ir77 4) X - 4He2 = 234Th90 X = 238U92 5) Beta emission results in the same nucleon number but an increase in the proton number; therefore, the result is: 234Pa91
Magnets can be used to make other magnets and things made of iron move without being touched. Something that has been electrically charged can make other things move without touching them.
