7.17 two radioactive nuclides decay by successive fi rst-order processes: x f22.5g d y f33.0g d z (th e times are half-lives in days.) suppose that y is an isotope that is required for medical applications. at what stage aft er x is fi rst formed will y be most abundant?

Okay let say from the diagram you have more force come in from the B point of the magnet and release out from A point of the magnet. so lets say north is always the attractive spot and south is your releasing spot.

Explanation:

meaning from magnet the north pole attracts objects and the south pole repeal object.