Recent content by dado

Can anyone explain me how to solve this

thanks. How to find resultant wave if I don't know "phi"?

Homework Statement Two transfersal sinusoidal wave of amplitude 0.5 cm and 8 cm wavelength traveling in opposite directions along the wire. Wave speed in the wire is 1.2 m / s. Write the equation of these two transfersal wave equation and find the resultant wave. Draw the shape of wire at time...

thank you. can you explain me what that wire marked in red means? [PLAIN]http://img822.imageshack.us/img822/2316/lkkj.png

Homework Statement How to find Uab and Ucd in this circuit http://img830.imageshack.us/img830/2852/556d.png Homework Equations The Attempt at a Solution I have no idea how to find it. I think that Uab=R*I

thanks

I'm learning and preparing myself for test, but I'm stuck. I don't know how to simplified this [PLAIN]http://img814.imageshack.us/img814/4977/42625320.png