The coefficient of linear expansion for a silver

Question

strip is 1.9 × 10−5
/
◦C.
What is its length on a hot day when the
temperature is 32◦C if the strip is 1.4 m long
when it is −15◦C?
Answer in units of m Your answer must be
within ± 1.0%

Answer 1

L = Lo + a*(T-To)Lo
L = 1.4 + 1.95*10^-5(32-(-15))1.4 =
1.401283 m.