I'm supposed to write an extended essay in physics (I'm currently studying in the last year of IB). I haven't chosen any research question or a topic for my essay. I would appreciate if you could give me some ideas. I searched about it but all the ideas I found are so common and everybody chooses them. I want to get an A so I need to have a new and nice idea. And something in which I can preform an experiment, and then write about the result and analyze them in about 4000 words.