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A sonometer wire of linear density 0.08kg m-1 subjected to a tension of 800N is...

Physics
WAEC 2003
A sonometer wire of linear density 0.08kg m-1 subjected to a tension of 800N is plucked. Calculate the speed of a pulse which moves from one end of the wire to the other
  • A. 179.0ms-1
  • B. 100.0ms-1
  • C. 15.8ms-1
  • D. 8.0ms-1
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Correct Answer: Option B
Explanation
v = \(\sqrt{\frac{T}{m}} = \sqrt{\frac{800}{0.08}} = 100\)m/s
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