Recent content by Reugar

Basically what has been said here is correct. Particle/wave duality, in your physics class you will most likely do the "dual slit" experiment, which should help you to understand a little better. When I was first learning about light, I read and listened to some of the Feynman lectures on it, he...

Here are some basic kinematics equations you will need: Vf = Vi + at Xf = xi + ViT + 1/2aT^2 xf - xi = 1/2(vi + vf)T Vf^2 = Vi^2 + 2a(xf - xi) Try to look at the problem again with those in mind and see where it takes you.

Hello, sorry I wasnt sure if this should be in the physics section of homework, but I didn't see anything where the astronomy section was...anyways. Im reviewing sidereal time systems, so given a right ascention and declination, I need to calculate what time an object is at its highest point...

That's much better...thank you. I was having a blonde moment there, but thanks for explaining it :smile:

Okay, so go back to the first law of inertia then. The fly doesn't make the train crash since it is of neglegable mass. Bit it DID still exert a force on the train. Now...im sorry if this seems foolish but there's just something that isn't clicking here. I push a block and exert 50N on that...

Yes...they must act on different objects, same magnitude opposite direction. Say for example I push a block with 50N of force...that block pushes back on me with 50N as well...why does the block accelerate?

I am doing a bit of review and have discovered something I haven't thought about before. We all know Newton's third law (Fab)=-(Fba). So, how can there be acceleration? Say that Fab is 10N, then -Fba is -10N...10N - 10N = 0N. In an action reaction pair, if this net force is 0N...how can there be...