[Solved] The two great theories of 20th- century physics are the theory of relativity and A) Hamiltonian mechanics. B) thermodynamics. C) electromagnetism. D) quantum theory. E) the bootstrap theory of elementary particles. Permissive Parenting: null Sexually Explicit Films: Movies that display sexual content, actions, or themes, intended to stimulate erotic rather than aesthetic or emotional feelings. Physical Abuse: Involves the intentional use of force against a person, causing injury, physical harm, or pain. Sexual Abuse: Non-consensual activities or behaviors of a sexual nature, which can include a wide range of actions from verbal harassment to physical assault.