Recent content by utek1

I work with high school small learning communities. It's an interdisciplinary curriculum, with courses cross-pollinating.

Ok, looks like it's back to the ol' drawing board. Physicists have gone to a lot of trouble to give certain terms exact definitions, and far be it from me rock the boat. What I've learned so far is this. Velocity measures how fast something moves and which way something points, and just because...

OK, I think I'm starting to get the hang of these terms. Magnitude of velocity---that's another word for speed---how fast---and the directional vector measures the degree that one is turning---how sharp. What I was trying to get at in my example was that the car was going north/south degrees...

Thanks for the feedback Obviously, I am one of those still confused by the difference between speed and velocity! For instance Not entirely true, in this case to say one's velocity has 'increased' is incorrect. It is true that one component of the velocity would increase (to 30mph), however...

I am writing an essay in which I try to describe Centripetal Force to a layperson. Since I am a layperson myself, I wanted to make sure that there were no glaring errors before I submitted it. If someone could review this, and let me know if it passes scientific muster, I would appreciate it...

I'm sorry if I'm being unclear, but I don't know how else to phrase it. My thought is this. If the Universe is expanding from the central point of the Big Bang, would not the Universe also be rotating around that point, so that a galaxy at the edge of the Universe would complete an orbit every...

Since everything in the Universe seems to be rotating, be it atoms or planets or stars or galaxies, and since the Universe consists of everything, shouldn't the Universe also be rotating? And if it is rotating, what is its axis?