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For part a) I did V=(L/C)^{-1/2}=2.5x10^{8}m/s. And then I said T=x/v where x=10m, so T=4x10^{-8}s.

For part b) V_{+}+V_{-}=V_{L}...since it's the first wave I suppose there wouldn't be a reflecting wave yet, so V_{-}=0.

I have an equation that says V_{+}=[V_{L}/2](1+R_{0}/R_{L})...since it is an open circuit, R_{L}=infinity, so R_{0}/R_{L}=0, and the equation becomes V_{+}=V_{L}/2 and V_{L}=12V, so V_{+}=pulse height = 6V.....but if [tex]V_-=0[/tex] then according to my first equation [tex]V_+=V_L=12V[/tex]..I'm confused.

I have a feeling b) is wrong and that it should actually be 24V because of a combination of waves, I'm not sure about part a), any help please?

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# Homework Help: Pulse Through Cable Help Please!

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