Spiders may "tune" strands of their webs to give enhanced response at frequencies corresponding to the frequencies at which desirable prey might struggle. orb web silk has a typical diameter of 0.0020 mm, and spider silk has a density of 1300 kg/m^3. to give a resonance at 140 hz , to what tension must a spider adjust a 13 cm long strand of silk?
express your answer to two significant figures and include the appropriate units.
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