Gone.
It wouldn't and couldn't
Impossible.
Probably the same thing that would happen if a meteoroid hit Mars or Venus; we probably wouldn't know about it. It would probably make a crater, depending on how big it was and how fast it was going. But because Pluto's mass is fairly low, its gravity is ALSO pretty low (0.067g) and being that far away from the Sun, the meteoroid would probably be moving fairly slowly, anyway. A meteoroid would probably "bump" into Pluto more that it would "hit" it.
The penny will be gone. You will also be gone with it, because getting close enough to a black hole to drop a penny inside it will catch you in its gravity well.
The plants inside it would die through lack of light (they would not be able to photosynthesise). If the glass was painted black you wouldn't be able to see through it which negates the entire point of it being glass.
nothing
Theoretically speaking, if you were inside of the black hole and you flashed a flashlight away from it, nothing would happen. This is because nothing - not even light - can escape from a black hole.
You would die
If atomic bombs entered a black hole, they wouldn't be able to detonate; instead, they would initially be stretched and crushed, and as they travel beyond the event horizon, they would be converted into gravitational energy. However, if you wereable to manage to get 5000 atomic bombs inside a black hole and detonate them, nothing would happen. The black hole would continue to exist as it always had; it would just be 5000-atomic-bombs-worth-of-weight heavier.
If you jumped into a black hole, you would be stretched into human spaghetti.
You would die.
noting