What Formula Should I Use for Coefficient of Volume Expansion?

Thread starter xiaoyaozizai
Start date Aug 27, 2022
Tags

Figure Formula

Click For Summary

To determine the coefficient of volume expansion, a specific formula is necessary, which is often more effective than using the ideal gas law equation pV = NRT. Participants emphasize the importance of understanding the concept rather than simply stating a lack of knowledge. Engaging with the guidelines and making an effort to learn is encouraged to foster productive discussions. The conversation highlights the need for clarity and precision in scientific inquiries. Understanding the coefficient of volume expansion is crucial for accurate calculations in thermodynamics.

Aug 27, 2022

xiaoyaozizai

Homework Statement: 3. The water volume of the central heating system at 10 º C is 0,800 m3 . (a) What is the volume of water flowing out from the overflow pipe when the system temperature rises to 60 ° C. The coefficient of volume expansion of the water is 2,1 × 10-4 1 / K? b) How does the answer change when you also consider the thermal expansion of the system made of steel? The coefficient of volume expansion of steel is 35,1 × 10-6 1 / K.

Relevant Equations: pv=NRT

I don't know what formula to use to figure that out,help

Physics news on Phys.org

Aug 27, 2022

BvU

Science Advisor

Homework Helper

!

Don't double post
read the guidelines
make an effort; "don't know" is no good in PF
"The coefficient of volume expansion" makes a much more useful equation than pV= NRT

Thread 'Chain falling out of a horizontal tube onto a table'

My attempt: Initial total M.E = PE of hanging part + PE of part of chain in the tube. I've considered the table as to be at zero of PE. PE of hanging part = ##\frac{1}{2} \frac{m}{l}gh^{2}##. PE of part in the tube = ##\frac{m}{l}(l - h)gh##. Final ME = ##\frac{1}{2}\frac{m}{l}gh^{2}## + ##\frac{1}{2}\frac{m}{l}hv^{2}##. Since Initial ME = Final ME. Therefore, ##\frac{1}{2}\frac{m}{l}hv^{2}## = ##\frac{m}{l}(l-h)gh##. Solving this gives: ## v = \sqrt{2g(l-h)}##. But the answer in the book...

View full post »