Earlier today I've attended a physics exam and there is a query I'm not sure about.
A metallic cube (specific heat capacity 30 cal/K*Kg ) falls from an height of 50 m on a non-conducting surface, and it stops. After the inelastic collision, what is the temperature of the cube?
a_ The...
Now everything make sense!
In my free time I'll study integral calculus and hopefully in a few months I'll be able to understand your first post to gain a more complete understanding of this subject!
Thank you, now I've got it! I didn't understand the difference between close and open surface. I thought an open surface was a surface without boundaries and that a flat circle without volume was a close surface. Now it's clear. Again I'm very glad you've helped me to understand
I mean, I'm thinking about a spinning coil (close surface) in a magnetic field. When the angle changes the number of field lines that pass through the coil changes, so the magnetic flux should change too. But since every line that enters the coil exits it, then the flux is always zero... so it's...
Thanks! So in the third Maxwell's equations what is changing is the magnetic flux density, not the magnetic flux since it's always zero? I don't know if that is a valid question...
Thanks for your answer. Yeah, I know the variation is different from the value of the magnetic flux, but I tought that, since the flux is always equal to 0, then (B1 - B0)/ Δt = 0. Isn't it?
Thanks, I really appreciate your answer. I'm a med student tho so all these integral equations are like Chinese to me, I've never studied those integral theorems. I've tried to to google the divergence theorem and Stoke's theorem but I've no fundation to understand them.
Could you try to explain...
Hi everyone, I have a question about Maxwell's laws. According to Maxwell the magnetic flux of a magnetic field through a close surface is 0.
But his third law says the circuitation of an electric field depends from magnetic flux variation. I can't understand how this can be possible since...