homework 2 solutions

homework 2 solutions - 1 2 Callister 19.D1(Note that this...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1.
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2. Callister 19.D1 (Note that this problem is in the "Design Problem" section at the end of the "Questions and Problems" section in Callister chapter 19.) 19.D1 Railroad tracks made of 1025 steel are to be laid during the time of year when the temperature averages 10°C (50°F). If a joint space of 4.6 mm (0.180 in.) is allowed between the standard 11.9-m (39-ft) long rails, what is the hottest possible temperature that can be tolerated without the introduction of thermal stresses? Solution For these railroad tracks, each end is allowed to expand one-half of the joint space distance, or the track may expand a total of this distance (4.6 mm). Equation 19.3a is used to solve for T f , where the value α l for the 1025 steel [12.0 × 10 -6 ( ° C) -1 ] is found in Table 19.1. Thus, solving for T f from Equation 19.3a leads to = 32.2 ° C + 10 ° C = 42.2 ° C (108 ° F)
Image of page 2
3. After summer 2011 midterm exam: β -SiC is a ceramic material used in high-temperature applications. It has the so-called zinc blende structure (see adjacent diagram). This structure is FCC with a two-atom basis having Si at (0,0,0) and C at (1/4,1/4,1/4).
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern