you will enter another universe
It disappears forever
Gone.
It wouldn't and couldn't
A black hole can't really form inside of another black hole. If you think of a black hole forming after a star goes supernova, then there isn't really a star to go supernove inside of the already created black hole. In fact, there isn't even any space inside of the blak hole for anything to happen. Two black holes can join together, but they wil eventually go to one.
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.
Impossible.
What Remains Inside a Black Hole was created in 1996.
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.
Nothing can escape from a black hole.
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.
Black Hole - comics - happened in 1995.
Black Hole Assault happened in 1992.