A female orb spider has a mass of 045 g she is suspended, Ask an Expert

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A female orb spider has a mass of 0.45 g. She is suspended from a tree branch by a 1.2 m length of 0.0020mm diameter silk. Spider silk has a density of 1300 kg/m^3. If you tap the branch and send a vibration down the thread, how long does it take to reach the spider?

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