[Solved] In the formula k = 0.693/t<sub>1/2</sub>,k is the decay constant. Homosexuality: A romantic or sexual attraction or behavior among members of the same sex or gender. Heterosexuality: Heterosexuality is the romantic or sexual attraction between individuals of the opposite sex. Pornography: Printed or visual material containing explicit sexual content intended to arouse sexual desire in its audience. Porn Users: Individuals who consume pornography, content intended to arouse sexual excitement.