The radioactive isotope z has a half-life of 12 hours. after 2 days, the fraction of the original amount remaining is

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Which metal exist in liquid state and can be cut with knife ?