Recent content by AlphaLearner

Thank you!

I can say that Electric Flux is Electric field passing per unit area perpendicular to electric field lines. But the formula came up as Φ = ∫ E⋅dA. Well, take the case of pressure! That is force acting per unit area perpendicular to direction of force. But it's formula came up as P = F/A. Now my...

I say, as long as the force exerted by the rocket motor is greater than that of frictional force, the car won't stop. It keeps moving. So the time period taken for car to stop in that case is 'Infinite'. Once the force gets lesser than that of friction force, the car can stop at some point and...

What do you mean? Dont you study simple systems rather go for more complex systems where energy and forces exist in vast forms which beginners (Including me to say) don't know over more than 90% what they are and where they come from too? It's like literally scaring off beginners away from...

Thank's for your reply, I didnt notice your post yet it maybe marked away from green.

Well... once again, 'Open System' has all to do with what you have said. But just tell me one thing, will you begin topics like Newton's laws of moton, work and energy, system of particles, momentum, gravitation, thermodynamics and to say complete mechanics with an 'Open System' or 'Closed...

I understand.

Summarizing what I actually meant to say in #57 since what I wanted to express is not clear: Now after reading what I wrote carefully, I thought of expressing contraction of metals will lessen the space, make structure more condensed, making free electrons trapped in latice causing problems for...

Are you sure about this? Then why metals contracting is not exactly because of just the lattice which has positive ions come closer but as you have said that even these positive ions would split out in absence of electrons so they even hold these at a place. I mean, even electrons start losing...

Since you have mentioned 'Open System', your statement can be agreed to an extent. But in closed rocket - Earth system, when mass of rocket decrease as it eject out fuel as it goes higher, velocity must and should increase. But due various external forces like gravitational force or air...

No, you and @vdvdlk are wrong. Because, varying mass will even lead to varying velocities! When mass increase, velocity decrease. When mass decrease, velocity increase just to put up that total KE value constant. So no such equations exist readymade. But you can still study its change in mass...

Hmm... surely! Will definitely go through a round and comeback here to conclude and verify.

All I know regarding resistivity of conductor is property of resisting flow of electrons and has various factors like area of cross - section, material of wire, temperature... But will what resists this flow of electrons is mainly the possession of partial dielectric character which depend on...

I am just asking will both have a link? Is resistivity is nothing but the possession of dielectric character even in a conductor? Or both are completely different?

Finally came to a conclusion. There's nothing separate like an 'Insulator' and 'Dielectric'. Every insulator is dielectric. Every insulator has some degree of tolerance against electron flow no matter its state of matter is... That degree of tolerance is measured as volt/meter, Number of volts...