Violence might be declining as a ratio on the population, but the world is becoming more and more populated. There are more human slaves today than there have ever been in history. I will not even go into human to animal violence, because the numbers there are simply staggering, due to the...
Just as any other sensory input, sound can stimulate pathways in the brain associated with pleasure and/or pain. Music is sequences of sounds that are studied to stimulate either of these particular responses. A great example of this is music used in movies, where sound can be used to create an...
One such field is computational science, or applied mathematics. In this field you need strong IT skills, strong math skills and some physics, depending on the specific path. But if you're interested in these three disciplines, then it's an excellent way to go.
I don't have any good physics books, could someone please help clarify this confusion on friction?
From what I read, I take it that the force of friction, which is proportional to the normal force, is the force keeping the two bodies stuck together. In order to slide one body against the...