Lorentz and Galilean Tranformations

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SUMMARY

The discussion focuses on determining the speed at which the Galilean and Lorentz transformations differ by 0.10 percent. The relevant equations are the Lorentz Transformation, xL = (x' + vt') / √(1 - (v/c)²), and the Galilean Transformation, xG = x' + vt'. The correct solution indicates that the speed v should be approximately 0.0447c, contrasting with the user's initial calculation of v being close to c. The clarification emphasizes the importance of correctly interpreting the problem statement regarding the percentage difference.

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Homework Statement


At what speed v will the Galilean and Lorentz expressions for x differ by 0,10 percent?

Homework Equations


xL= (x'+vt')/√(1-(v/c)²) (Lorentz Transformation)
xG=x'+vt' (Galilean Tranformation)

The Attempt at a Solution


I've tried: xG/xL = √(1-(v/c)²) = 0,1%=0,1/100=10^(-3) => 1-(v/c)² = 10^(-6) => v = [√(1-10^-6)]*c~ 0,999999*c.
Where did I go wrong?

The result is 0,0447c according to the book (Introduction to
 
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xG/xL = √(1-(v/c)²) = 1-0,1%

"will differ by 0,10 percent"

not "will be 0.10 percent"
 
Thanks, maajdl.

Greetings from Brazil.
 

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