A child is, by definition, not a adult
An adult is not, by definition, a child
Thus there is no such thing as an 'adult child' - your question is therefore impossible to answer.
Yes he/she is now an adult.
Yes, you can ask the police to remove them for tresspassing.
A parent can get the medical records of an adult child if the adult child gives express permission.
Is the intent to avoid paying child support in states where it runs past age 18?
18
There is no such thing as an adult child.
Tell them to leave. If they do not, call the police and ask them to remove the tresspasser.
Potentially. If the proper authorities find reason to believe that the child is at risk of obtaining drugs illegally, or that the child is also at risk of an overdose, the authorities can remove the child from the home for "Child Neglect".
No it can't; you must use adult AED pads for an adult & child AED pads for a child.
baby child adult baby child adult
Having a child when young does not make the girl an adult.
The fulcrum should be moved closer to the child in order for the child to lift the adult. Placing the fulcrum closer to the lighter weight (child) increases the mechanical advantage, allowing the child to exert a greater force and lift the heavier weight (adult).