Recent content by fizika_kz

The Voltage of secondary coil is not in phase with the flux, because it is a time derivative of the flux, isn't it?

why not? electric field exerts both on positive and negative charges.

there is standing wave. do you know what it is?

Use the relationship between the work and change of the energy.

I think it would be right, if you first find the electric field. Then use Maxwell's equation to find the B.

Use the Newton's second law, considering a small dt amount of time.

heyyy. I remember this problem. This problem is from World Physics Olympiad, isn't it dHannibal?

Hello! It's quite simple question :D. We just need to use the conservation law of the momentmum: the initial momentum of the system is only running player's - 75kg * 10m/s = 750 kg* m/s. After the collision the total momentum is just the sum of momentums of two players. So, the momentum of...