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mikael mikael
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11 years ago

 
A  0.23 kg block on a horizontal frictionless surface is attached to a spring whose force constant is 470 N/m. The block is pulled from its equilibrium position at x = 0m to a displacement x = +0.080m and is released from rest. The block then executes simple harmonic motion along the x-axis (horizontal). When the displacement is x = 0.021 m, the kinetic energy of the block is closest to: 
A)
 
1.4 J 
B)
 
1.3 J 
C)
 
1.5 J 
D)
 
1.6 J 
E)
 
1.7 J 
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padrepadre
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10 years ago
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mikael Author
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10 years ago
Thank you for the help, really appreciate your time and effort.
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