Magnets are able to move object without touching them due to magnetic force. Electromagnetism is another way to move objects without touching them.
Electrostatic induction allows an object to produce a charge in another object without touching.
by keeping another magnet or attractive force
You can use the shape of a mirror without touching by looking at its shape.
That's like asking how do you ride a bike without a bike. It doesnt make since.
No, not if there's enough charge. Clouds in the sky transfer charge to the ground quite readily, without touching. When that happens, we call it "lightning".
it can but only if there is somthing in between it. If the cannot be connected in any way, no.