Answer:
The solved problem is in the photo. Hope it helps.
Answer: they are diffrent
Explanation: because no ring can be the same it would be crazy and every one has there own unecke ring lol
Explanation:
Parameters
Number of oscillation = 40 oscillations
Time of oscillation = 128s
Formular
Period (T) = <u>No of oscillation</u>
Time taken
T = <u>128</u>
40
T=3.2s
Explanation:
Given that,
Initial temperature
Final temperature
Length = 34.0 m
We know that,
Coefficient of linear expansion of Invar is

Coefficient of linear expansion of steel is

We need to calculate the temperature difference is



We need to calculate the change in length of Invar
Using formula of change in length

Put the value into the formula



We need to calculate the change in length of steel



Difference in length of two 34.0 m
Long surveyor's tapes is

Put the value into the formula

The difference in length is 18.12 mm.
Hence, This is the required solution.