I've struggled with lack of motivation and depression. I tried a bunch of things over the years to solve my problems. I'm pretty productive now, so I think I might be able to offer you some advice.
If you spend a lot of time on web sites, such as forums and streaming video sites, perhaps you...
Can anyone give me advice about how to find mentors or study partners?
I'm a computer programmer, and I'm trying to learn some math and physics on my own. It seems pretty hard, since there's no one I can really go to with questions.
Thanks. That gave me the hint I needed to fix the program.
I'm still a bit confused about how friction works, but I think I can ask about that in another thread.
I'm trying to write this Python program that simulates a completely inelastic collision between two objects. The program seems to work for the most part, but I'm completely lost on the "heat released" part at the end. I have no idea if I'm calculating this right, or if I'm completely wrong. Can...
That answers my question.
I can't say I fully understand everything you said, but I'm sure it will give me some stuff to think about for a while.
Thanks for replying.
I guess I could explain my question like this:
You are communicating with an alien from another universe who knows nothing about our universe or its laws of physics. You explain Newton's three laws to this alien. Would he then be able to extrapolate how vectors and 3d space work in our universe?
But why are they properties of vectors? If we were dealing with non euclidean space, wouldn't vectors have different properties? Are those vector properties due to Newton's laws?
So, I'm reading a physics book, and it talks about Newton's three laws, of course, but then after that it says that if a force of f pushes on an object at angle Θ, then the force in the x direction is f ⋅ cos(Θ), and the force in the y direction is f ⋅ sin(Θ).
Where did THAT come from? Do we...