A 34-year-old man was arrested last week after he was accused of exposing himself in public and masturbating in front of a child in Bergen County, authorities announced Tuesday. Dawid Iwaszek, of Englewood, was arrested on May 24 and charged with criminal sexual assault by sexual contact, endangering the welfare of a child and lewdness, according to a release from the Bergen County Prosecutor’s Office. The Englewood Police Department was notified on May 23 of the incident, which allegedly happened in Englewood in the presence of a child under the age of 13, the office said. The office did not …