There can be several reasons why a question and answer will become locked.
Some questions attract vandalism, when people change good answers to nonsense. Therefore, those answers are 'locked'.
Some answers are tampered with so they are locked to prevent this from happening.
Science answers testable questions, some questions are not testable.
Some.
Ok, now ask some questions and we will show you some answers.
If you ask some questions, people will try to give you some answers. However, some questions are not answerable if the question doesn't include enough details.
Because some people don't know the answers to the questions, or just no one has seen it yet. Maybe some don't want to look for any.
I found cplusplus-answers.blogspot.com They have a lot of information on questions with answers and some without answers too but it is very helpful
Probably because no one has asked any questions about The Who. If you want some answers about The Who just ask them on Wiki Answers.
Some questions are not real questions, others don't have an answer.
Yes and no, some physics can post questions and answers on the internet but, some don't want to or, can't do it.
some do