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A pressurized spherical tank is made of 0.5-in.-thick

Mechanics of Materials | 10th Edition | ISBN: 9780134319650 | Authors: Russell C. Hibbeler ISBN: 9780134319650 134

Solution for problem 8-2 Chapter 8

Mechanics of Materials | 10th Edition

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Mechanics of Materials | 10th Edition | ISBN: 9780134319650 | Authors: Russell C. Hibbeler

Mechanics of Materials | 10th Edition

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Problem 8-2

A pressurized spherical tank is made of 0.5-in.-thick steel. If it is subjected to an internal pressure of p = 200 psi, determine its outer radius if the maximum normal stress is not to exceed 15 ksi.

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Chapter 15 Part 2:  The Steady State Approximation: o Two limiting cases:  Low pressure: When [M] is small, k2>k2[M] and rate is 2ndorder  High pressure: When [M] is large, k1[M]>k2 and rate is 1 order  Intermediates follow pseudo first-order kinetics  Effects of temperature on reaction rates: o Many reactions increase rapidly with T  Increase T by 10 degrees, rate doubles o Arrhenius equation states that rate constants depend exponentially on temperature. o k=Ae^-Ea/RT o lnk=lnA-Ea/RT o When plotted with y axis lnk and x axis 1/T, the slope is a negative linear one o Strong temperature dependence of reaction rates can be related to Maxwell-Boltzmann distribution of KE.  Fraction of molecules of energies>Ea  Potential energy surface (PES): Interaction of reactants described by a potential energy surface  Reactants approach on a reaction path.  Activation energy for forward reaction: Ea,f  Activation energy for reverse reaction: Ea,r  Change in internal energy for reaction: DeltaE=Ea,f- Ea,r  Elementary reactions always increase with temperature since activation energy for elementary reactions is always positive  Kinetics of Catalysis: o Catalysts are substances that are part of a chemical reaction and speed it up, but there’s no permanent chemical change in itself.  They modify pathways or provide new pathways for reaction  They speed up reactions by increasing the Arrhenius factor A, or lowering the activation energy Ea  Have no effect on thermodynaimcs  Two types: homogenous and heterogeneous  Heterogeneous catalyst: one present in a distinct phase  Ex. A solid surface in a solution-phase reaction  Homogenous catalyst: Not present in distinct phase  Ex. Chlorofluorohydrocarbons and nitrogen oxides in depletion of stratospheric ozone, and catalysis of the oxidation-reduction reaction by silver ions in solution  Inhibitors slow reactions by increasing Ea  Enzymes are large catalytic protein molecules, and reactions occur by binding of a substrate to the active site of the enzyme. o Most chemical reactions in living systems carried out with enzymes.

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Chapter 8, Problem 8-2 is Solved
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Textbook: Mechanics of Materials
Edition: 10
Author: Russell C. Hibbeler
ISBN: 9780134319650

Mechanics of Materials was written by and is associated to the ISBN: 9780134319650. The answer to “A pressurized spherical tank is made of 0.5-in.-thick steel. If it is subjected to an internal pressure of p = 200 psi, determine its outer radius if the maximum normal stress is not to exceed 15 ksi.” is broken down into a number of easy to follow steps, and 37 words. This textbook survival guide was created for the textbook: Mechanics of Materials, edition: 10. The full step-by-step solution to problem: 8-2 from chapter: 8 was answered by , our top Engineering and Tech solution expert on 11/10/17, 06:06PM. This full solution covers the following key subjects: determine, exceed, internal, its, ksi. This expansive textbook survival guide covers 14 chapters, and 1373 solutions. Since the solution to 8-2 from 8 chapter was answered, more than 249 students have viewed the full step-by-step answer.

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A pressurized spherical tank is made of 0.5-in.-thick