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One mole of iron (6 x 1023 atoms) has a mass of 56 grams, and its density is 7.87 grams per cubic centimeter. You have a long thin bar of iron, 2.7 m long, with a square cross section, 0.08 cm on a side. You hang the rod vertically and attach a 68 kg mass to the bottom, and you observe that the bar becomes 1.41 cm longer. Calculate the effective stiffness of the interatomic bond, modeled as a "spring": ks = 1.9959e11 X N/m Next you remove the 68 kg mass, place the rod horizontally, and strike one end with a hammer. How much time At will elapse before a microphone at the other end of the bar will detect a disturbance? At =

One mole of iron (6 x 1023 atoms) has a mass of 56 grams, and its density is 7.87 grams per cubic centimeter. You have a long thin bar of iron, 2.7 m long, with a square cross section, 0.08 cm on a side. You hang the rod vertically and attach a 68 kg mass to the bottom, and you observe that the bar becomes 1.41 cm longer. Calculate the effective stiffness of the interatomic bond, modeled as a "spring": ks = 1.9959e11 X N/m Next you remove the 68 kg mass, place the rod horizontally, and strike one end with a hammer. How much time At will elapse before a microphone at the other end of the bar will detect a disturbance? At =

College Physics
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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One mole of iron (6 x 1023 atoms) has a mass of 56 grams, and its density is 7.87 grams per cubic centimeter. You have a long thin bar of iron, 2.7 m long, with a square cross section, 0.08 cm on a side. You hang the rod vertically and attach a 68 kg mass to the bottom, and you observe that the bar becomes 1.41 cm longer. Calculate the effective stiffness of the interatomic bond, modeled as a "spring": ks = 1.9959e11 X N/m Next you remove the 68 kg mass, place the rod horizontally, and strike one end with a hammer. How much time At will elapse before a microphone at the other end of the bar will detect a disturbance? At =
Transcribed Image Text:One mole of iron (6 x 1023 atoms) has a mass of 56 grams, and its density is 7.87 grams per cubic centimeter. You have a long thin bar of iron, 2.7 m long, with a square cross section, 0.08 cm on a side. You hang the rod vertically and attach a 68 kg mass to the bottom, and you observe that the bar becomes 1.41 cm longer. Calculate the effective stiffness of the interatomic bond, modeled as a "spring": ks = 1.9959e11 X N/m Next you remove the 68 kg mass, place the rod horizontally, and strike one end with a hammer. How much time At will elapse before a microphone at the other end of the bar will detect a disturbance? At =
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