Calculating Thermal Expansion and Young's Modulus: A Scientific Inquiry

[ice87]

These are really parts of questions.
http://noether.physics.ubc.ca/physics153/assign22k5.pdf

for number 2, I'm getting 264000kPa, but somehow it just doesn't seem rite, so if you guys can check for me, that'll be great. the other one i don't get is the second part of questions 4 where it asks for a time difference. can anyone help me out here? thanks!

 

[ice87]

*bump* no one?

 

[Integral]

Could you post what you used for the various constants?

Thermal expanson of Al =?
youngs modulus of steel =?

 

[ice87]

thermal expansion of: Al = 2.4*10^-5, steel: 1.2*10^-5, brass: 2.0*10^-5
young's modulus of steel = 20*10^10 (NOT 2.0*10^10)