Hi there!
My name is Yaicel. I would like to solve all your problems, nine at all inside the five files. As you can see in my profile, I am a serious worker and highly qualified in physics. Actually, I have nuclear science degree and I have been teaching these physics topics for 7 years to university students. I will deliver a detailed step-by-step solution of all problems, you will like my standard of work and for sure you will have the perfect solution.
Please, let me help you in this task.