Generally, friction is the result of the resistance between two or more moving surfaces. Also speaking generally, there are no moving parts in the brain, and movement in the brainpan is not a good thing.
So, all things being normal, there is no friction in the brain.
The average human brain weighs about 3 pounds (1.4 kilograms).
friction (this was on my brain check)
If you mean "How much percentage of water does a human brain have?", the answer is about 77-78%.
10%
10 pounds for the average human
about 30% of the human population experiences brain freeze and 70% doesn't .
The area of the cat's brain that is responsible for emotions is very similar to that area of a human's brain. Much more so than a dog's.
BaNaNa
over 100000
appox 20 %
They were the same size.
a human only uses 30% of the brain