Hi @engr.martins. Some of the texts in this article were copied from an article that can be found here:
https://www.britannica.com/science/shock-wave
You have been changing words without changing the structure of the sentences. This is an act of plagiarism and let me remind you that plagiarism is a serious offence in the steemSTEM community.
sorry this was a mistake, my account was hack by a friend due to some misunderstanding, this action is a fiat accompli hence i accept any prosecution. thankx.