Can one use a TK attack with an onject to hit characters hidden in stealth?
Thanks ahead of time for the help!

No. They can't see them.

If you use, for the attack, the same object where the other character are hidden, YES you can.
Because the object moved with TK (or used for an attack with) does not affect Line of Fire.

Well, yeah, if you're gonna get all fancy!

At that point, just punching them might be more appropriate

Not necessarily. If you bonk them with the object they are sitting on, even if the attack misses the object is now gone (potentially opening of LOF from other characters).

Well, there's also the Superman Ally or Ultimates TA to help you attack a figure in stealth.

So what you are saying is that if batman was standing on the laser turret Marvel girl who would have to be adjacent to the object can TK the object out from under batman and smack him with it ?

I have not used tk to attack a person so does one have to be adjacent to an object to TK it to attack or does the object just have to be within the persons range ?

the figure with tk needs to be adjacent to the object. the regular rules for tk apply (ten spaces, los, etc.) you just have to make an attack roll against the opposing fig then.

as far as i know, this is the only instance in which a grounded figure can make what is technically a ranged combat attack against an adjacent grounded figure.

From the General FAQ:

Hey thanks everyone. I got some new ideas from this and a better understanding.