Recent content by Leaph

There's no friction, so nothing slows down planets. Gravity do not "consume" any energy

Shyan has told you everything you need, but I'd like to stress the importance of multivariable calculus. In particular, you are better to deeply understand the difference between partial derivative, total derivative and differential

Mass hasn't a "direct" effect, but it plays an important role becouse of the kinetic energy. We can take as exemple a truck and a small car: even if they travel at the same speed the truck is harder to stop and this difference doesn't depend on the brake (in your question air resistance), but on...

The guy on the ground simply sees the ball moving at costant velocity, so his equation is simple: F=0. Than he can ask himself a simple question: if there's gravity in that car, why isn't it "acting" on the ball? Why can't I see any force? It is balanced by other forces. If there's no...

a famous physicist (maybe it was Feynman, but I am not sure) said something along this line "nobody really understand quantum physics, you can just get used to the idea". The reason is well explained by Phinds: we have never had similar experiences.

I suggest you this http://www.amazon.com/s/ref=nb_sb_noss/278-0741320-8004513?url=search-alias%3Daps&field-keywords=benenti+casati&tag=

No, you can't becouse the uncertainty principle comes from the mathematical tools used in q.m. which aren't the same of classical mechanic, so position and momentum are defined differently (they are operators and not simply vectors). This seems a simple "mathematical trick", but is proven by...

I know of several physics grad people who work in banks. Moreover the research field of "human dynamics" opens us a lot of new possibilities, for exemple in marketing or sociology. Another less-known career is scientific journalist and I think we really need good ones...

I think that it is impossible to understand the dirac-delta without knowing the distribution's theory. So I recommend Schwatz's "mathematics for the physical sciences". It explain very clearly fourier's transform too.

I am reading Cohen-Tannoudji and I strongly recommend it. It is complete and precise, but of course not easy to understand