## anonymous 4 years ago A steel rivet 1.871cm in diameter is to be placed in a hole 1.869cm in diameter. To what temperature must the rivet be cooled if it is to fit in the hole(at 20 degrees celcius)

1. anonymous

help :)

2. anonymous

What is the linear coefficient of thermal expansion for steel?

3. anonymous

10.5 x 10 to the -6

4. anonymous

|dw:1327638523463:dw|

5. anonymous

${\Delta L \over L_i} = \alpha_L \Delta T$where L will be the radius.

6. anonymous

can you show the work plz and what you pluged in cuz i got a test tommorow

7. anonymous

${(1.869 - 1.871) \over 1.871} = \alpha (T_f - 20)$

8. anonymous

whats the alpha

9. anonymous

linear coefficient of thermal expansion

10. anonymous

Make sure it has units of m/C. If not, you need to convert the temperature to Kelvin.

11. anonymous

oh ok thank you so much man, you dont mind if you help me out with some more problems

12. anonymous

how?

13. anonymous

Not at all. Post them.