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olya-2409 [2.1K]
3 years ago
14

A silver bar 0.125 meter long is subjected to a temperature change from 200 C to 100 C . What will be the length of the bar afte

r the temperature change?
A) 0.00023635 meter
B) 0.124764 meter
C) 0.00002363 meter
D) 0.0000189 meter
Physics
2 answers:
dimulka [17.4K]3 years ago
8 0
\Delta L= \alpha L_0 (T_f-T_i)

= (18 x 10^-6 /°C)(0.125 m)(100° C - 200 °C)

= -0.00225 m

New length = L + ΔL
= 1.25 m + (-0.00225 m)
= 1.248
So your answer is B.
maksim [4K]3 years ago
7 0

iiiiiii agree lol EVERYONE HAVE A GREAT DAY

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Explanation:

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All metals have a unique and fascinating property of being malleable. They can be carved into any of shape. When hammered they simply draw out and retain their long range ordering of their crystal lattice.

This is made possible by the presence of metallic bonding between the atoms.

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