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http://online.physics.uiuc.edu/cgi/courses/shell/phys102/fall06/prep2a.pl?practice/exam3/sp06

Questions 4-6 , i don't need it to be solved, i just need to know whether my equations are right cause i have somone else's answers and i don't know how he got them. he Has I1 = I0 / 2 which doesn't make sense

I1 = I0 Cos(45)^2 since it is not verticle correct? if it was verticel it would be I1 = I0/2

I2 = I1 (Cos 45 + Theta ) ^2 since u are trying to find the angle diffrence

I3 = I2 (Cos 45 - Theta) ^2

is that even right at all? if not does anyone know of a site that has lectures to this stuff. Thanks

Questions 4-6 , i don't need it to be solved, i just need to know whether my equations are right cause i have somone else's answers and i don't know how he got them. he Has I1 = I0 / 2 which doesn't make sense

I1 = I0 Cos(45)^2 since it is not verticle correct? if it was verticel it would be I1 = I0/2

I2 = I1 (Cos 45 + Theta ) ^2 since u are trying to find the angle diffrence

I3 = I2 (Cos 45 - Theta) ^2

is that even right at all? if not does anyone know of a site that has lectures to this stuff. Thanks

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