It was your first day at your new school. To be honest, you were very uncomfortable, but you hoped that you would be able to introduce yourself in class with some kind of light, both for teachers and classmates. Your first lesson was physics. You arrived about ten minutes before her, after which we tried to start a conversation with almost everyone who came to the office. Everything was going well, you got to know most of the class, the bell rang. Dottore, your physics teacher, told you at the beginning of the lesson that you can take a topic from him and make a presentation from the very beginning of the quarter, so that you would not run after grades, so you immediately raised your hand to which you received a smile from the teacher. – so, if you come to the lesson, I'll show you the possible topics. Here, take an example! It's only the first day of school, and he's already watching his grades, well done.