why is the bris 8 days after a baby boy is born?

I have a friend who is a Jehovah Witness, and we were discussing the name of God, and she said it was Jehovah, and when I said that we don't and can't really know His name, she said to look at Psalm 83, verse 18, so I did, and yes, it says there :"....whose name alone is JEHOVAH.....". I found this in the King James version. What can I say to my friend.

whats the torahs point of view on tampons? on pads? does the torah perfer one more than the other?

Why are jewish males circumcised? What is the biblical significance of such a characteristic?

I am doing a project on the holocaust for my R.S Judaism coursework. I was wondering what your view is on this quote, "The past should be Forgiven and Forgotten" in relation to the holocaust. I would really appreciate you're answer as am finding it hard to gather information. Thankyou