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September 19, 2014

September 19, 2014

Posted by **Maddie** on Monday, October 7, 2013 at 8:26pm.

- Physics -
**Elena**, Tuesday, October 8, 2013 at 3:10pm(1)

x₁=11.8-9.8 = 2 cm

V=kx₁²/2

2.2V =kx₂²/2

2.2V/V = 2kx₁²/2 kx₂²

2.2= x₁²/ x₂²

x=sqrt{2.2•2²} =2.97 cm

L=9.8+2.97 =12.77 cm

(2)

x=sqrt{2.3•2²} =3.03 cm

L=9.8-3.03=6.77 cm

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