[Solved] Explain why,when all adjustment have taken place,the perfectly competitive firm will operate at the minimum of its short-run and long-run average total cost curves and earn zero economic profit. Long Period: An extended length of time, often involving sustained activity, development, or condition. Violent Pornography: Pornographic content that includes acts of violence or aggression, often sparking debates about its effects on individuals and society. Willing to Aggress: The readiness or predisposition of an individual to engage in aggressive behavior. Wave Scheduling: A system of scheduling in which the number of patients seen each hour is determined by dividing the hour by the length of the average visit and then giving that number of patients appointments with the doctor at the beginning of each hour.