Science, asked by DizasterMaster, 1 year ago

How do I solve this? I would really appreciate if someone could explain it to me.

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Answered by Anonymous
0
You have to find the coefficient of heat transfer using the formula 
 l = l'{1 + α(ΔT)} 
l ----> new length 
l' -----> old length 

After that again use the formula with new 
Δ T. 

Answered by Anonymous
3
solving.....
the answer Is 10.cm
basically for every 20 C the there is increse of 5 cm....

DizasterMaster: how did you find that out?
Anonymous: actually I used simple calculations
Anonymous: for 100 C there is change of 20 cm
Anonymous: thus for every 20C there is change of 5 cm
Anonymous: so for 40C it's 10 cm
Anonymous: its a unitary method....
DizasterMaster: Thanks
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