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An Astronaut stands at the mouth of a large deep cave on the planet Zanthra. The...

An Astronaut stands at the mouth of a large deep cave on the planet Zanthra. The wind is blowing in such a way that the cave forms a standing wave with a 2nd overtone frequency of 25 Hz. Assume the cave is approximately the shape of a tube with a closed back end. The speed of sound in air on the planet Zanthra is 500 m/s. How far is it to the back of the cave?

F=(4i+3j+2k)N s=(2i-1j-3k)m r=(3i-2k)m What is the work done by the force F over the displacement s ? What is the torque generated by the force F applied to the force arm r ?

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