Answered: As part of a class demonstration, a…

Name: As part of a class demonstration, a physics teacher sits down on a rol
Uploaded: 2024-03-20T06:57:37.000Z
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Description: As part of a class demonstration, a physics teacher sits down on a rolling office chair while holding a fire extinguisher. The total mass of the teacher+chair+extinguisher is M = 82.0 kg. Starting from rest, she aims the fire extinguisher horizontall

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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As part of a class demonstration, a physics teacher sits down on a rolling office chair while holding a fire extinguisher. The total mass of the teacher+chair+extinguisher is M = 82.0 kg. Starting from rest, she aims the fire extinguisher horizontally and squeezes the handle. Over the course of a few seconds, ∆m = 4.00 kg of carbon dioxide is ejected from the extinguisher with a speed of v = 20.0 m/s relative to the ground.

a) What is the total kinetic energy KE contained in the system (teacher+chair+extinguisher+ejected carbon dioxide) at the end of the demonstration? (You may neglect any friction in the wheels of the chair.)

b) As (∆m → 0), what does KE approach?

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