Recent content by gedanken6

Homework Statement Question 1. General Plane Waves. We may represent a general electromagnetic plane wave by (real part of the complex exponentials) E=E_{0}*e^(i*k*r-iwt) B=B_{0}*e^(i*k*r-iwt) Show that Faraday's Law becomes iwB0=-ik x Eo Homework Equations dB/dt=- curl of E The...

Homework Statement A particle oscillates with an s.h.m of amplitude 50mm and a maximum speed of 0.25 m/s. Calculate the pulsatance, period and maximum acceleration Homework Equations x = a sin(wt) dx/dt=awcos(wt) d2x/dt2=aw^2sin(wt) Put in x=0.05sin(wt) 0.25=0.05wcos(wt)...

Homework Statement A body of large mass is suspended by means of a string A from the ceiling, and another similar string B is attached to the bottom of the body. Which string would break when string B is pulled (a) sharply, and (b) steadily? Why? Homework Equations F=ma The...