Bishop73

Answer: Part of the reason in the film is based on the comic book character, especially in the early years of the comic. Jameson thinks Spider-Man is a vigilante and a menace with something to hide (i.e. why does he wear a mask?). In the early comics, Jameson didn't think kids should see Spider-Man as a hero but should instead look to people like his astronaut son, John, as a hero. Plus, the Daily Bugle is a tabloid paper, so Jameson is trying to sell newspaper with sensational headlines, even if it's libel.

Bishop73

Answer: It's hard to say. The film shows Doc Ock dying, and the arms seem to "die" with him. (Notice the lights on them slowly blinking out as he sinks into the water.) But at the same time, we don't know 100% how they work, so there's always a chance if they were removed and attached to someone else, they may come back alive and resume their "mission." Outside of the inhibitor chip, which seemed to have its own power source, the arms themselves didn't seem to "come alive" until the unit attached itself to his spine. So I always assumed they got their power/electricity from a host body. Which would explain why they appeared to "die" when Ock died.

TedStixon

Answer: How the tentacles work in the film differ a bit from the comics, so any answer would be speculation (and not really relevant since any future Doc Ock movie character is going to be a reboot with rules based on the writers' whims). In the film, the tentacles were attached to his nervous system along the spinal cord and he was able to control them mentally (mentally controlled prosthetics are a real thing). In the comics, they were more remote-controlled and his exposure to radiation gave him telepathic control over them and he could control them psionically, even when severed from his body. In the film, the tentacles had been built with more A.I. than in the comics, and the blast from his sun experiment actually caused the tentacles to gain control of Doc Ock because of the A.I. If Doc Ock died, the tentacles could continue to "live" if they had a power source. They could then be attached to someone else in the same manner, i.e. connected to the nervous system. However, whether or not they would be in control of that person or "alive", without going through another similar accident, would be speculation and up to the writer.

Bishop73

Chosen answer: Essentially he created a nuclear fusion machine to produce energy, more efficiently than anything else on Earth. Currently, nuclear power plants work by nuclear fission, the splitting of atoms to produce energy. Fusion is the combing of atoms to produce energy and is how the Sun (and all stars) works. Which is why Otto says "the power of the sun, in the palm of my hands".

Bishop73

Answer: He went to borrow money from her.

Bishop73