A UW-Madison mechanical engineering senior admitted being involved in three burglaries of his physics professor’s office to find copies of exams, according to charges filed Monday in Dane County Circuit Court. A UW-Madison official called it the worst example of cheating she has seen at the school. According to a criminal complaint, Nicholas Z. Hanson, 22, of St. Louis Park, Minn., admitted to burglaries in October and November and involvement in another in December in which another mechanical engineering senior, allegedly working on Hanson’s behalf, was caught by the professor.