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

  • Thread starter Thread starter ice87
  • Start date Start date
AI Thread Summary
The discussion focuses on calculating thermal expansion and Young's modulus, with a user expressing uncertainty about their calculation of 264,000 kPa for a specific problem. They also seek clarification on the time difference in question 4 and request assistance with constants used in their calculations. Key values mentioned include the thermal expansion coefficients for aluminum (2.4 x 10^-5), steel (1.2 x 10^-5), and brass (2.0 x 10^-5), along with the correct Young's modulus for steel, which is 20 x 10^10. The thread highlights the need for peer verification of calculations and constants in physics problems.
ice87
Messages
25
Reaction score
0
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!
 
Last edited by a moderator:
Physics news on Phys.org
*bump* no one?
 
Could you post what you used for the various constants?

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

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

Confusion Calculating Young's Modulus
Replies
5
Views
2K
Calculating Young's Modulus from this Stress/Strain Graph
Replies
29
Views
7K
Thermal Expansion of a Wire Connected To a Rod
Replies
6
Views
3K
Calculating Bulk and Shear Modulus with Young's Modulus and Poisson's Ratio
Replies
2
Views
3K
What is the Young's Modulus of Aluminum, Steel, and Brass?
Replies
14
Views
3K
Stretching of a wire due to it's weight
Replies
19
Views
3K
How Does Young's Modulus Relate to Spring Constants in Motion Equations?
Replies
3
Views
3K
Traction/ Compression stress and strain exercise
Replies
1
Views
2K
Why is My Young's Modulus Calculation Giving a Different Result?
Replies
4
Views
2K
Relation between Young's modulus and the coefficient of thermal expansion
Replies
2
Views
8K

Hot Threads

Recent Insights

Back
Top