Recent content by FerN61

Why aren't positive and negative charges attracted to each other?

Homework Statement Why are protons in the nucleus and electrons aren't?? The Attempt at a Solution So this is the question I was asked. I understand that protons are held together by nuclear (or strong) force. I understand that an atom is stable because there's an equilibrium...

Homework Statement A wire of length L=20cm travels with an acceleration a=0.002m/s2 perpendicular to the Earth's magnetic field (B=20μT). Considering that the wire starts from rest, calculate the value of the emf (electromagnetic force) when an hour has gone by. Homework Equations My...

Hello, I'm working on obtaining an equation that will help me model the behavior of velocity as a response to the current flowing to a coil in a MagLev. I have tried to relate momentum and electromagnetic momentum: m*v=F*Δt F=q(E+ v X B) V= (q(E+ v X B) Δt)/m Am I going the right...

Beats Ok so, it is a beat frequency so f2-f1 = 8 f2= f1+8 using doppler's formula f1+8=f1((Vsound+5)/Vsound) Assuming Vsound= 343 m/2 f0=548.8 The answer is supposed to be 137.17... What am I doing wrong?

Homework Statement A student is at some point between two sound reflecting walls. He's holding a tuning fork and runs towards one of the walls at 5m/s. The pulsating frequency he hears is 8Hz. ¿What's the sound frequency emitted by the tuning fork? Answer: 137.17 Hz. I know I'm supposed to use...