It might depend on the circumstances, which you do not discose in your question. There are circumstances which could permit it. 'Fresh Pursuit,' being one. Is the ex-con under the supervision of a Parole Officer? Did the PO request the police assistance to conduct a search? Why were the police there in the first place? More information is needed in order to formulate a better answer.
Yes it is a felony to evade arrest.
You need to examine your release agreement and local law.
If it is a felony warrant yes they will arrest you
Yes, you are wanted for a FELONY!
An arrest warrant is an arrest warrant, they can kick your door down whether it's a misdemeanour or a felony.
Yes, of course. An arrest warrant is a command from a judge to arrest a person. Usually a police officer has no choice and must arrest.
Anytime he or she feels there is a threat or is pulling someone over on a felony warrant.
There is no special clock because of a search warrant, a search is just another investigation tool.
not unless its a federal warrant. They can not. Added; If it is a felony warrant - and the subjects address in PA is known to the NJ police, they can advise the PA police to pick this person up and hold him for extradition back to NJ.
If the subject being detained is the object of an interstate extraditable warrant, they will travel to whatever state the detainee is incarcerated in.
The hospital would not know whether you have a warrant or not. However, they will probably call the police to come investigate the gunshot wound, and the police would then find out about the warrant.
No.