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Animal Propulsion Squids and octopuses propel themselves by expelling water. They do this by keeping water in

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Animal Propulsion Squids and octopuses propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracting the cavity to force out the water through an opening. A 6.50-kg squid (including the water in the cavity) at rest suddenly sees a dangerous predator.
(a) If the squid has 1.75 kg of water in its cavity, at what speed must it expel this water to suddenly achieve a speed of 2.50 m/s to escape the predator? Neglect any drag effects of the surrounding water.
(b) How much kinetic energy does the squid create by this maneuver?
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IDENTIFY Since drag effects are neglected there is no net external force on the system of ...View the full answer


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Physics

Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

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