What's the equation relating coefficient of linear expansion with change in length and temp, original length

Question

The change in length of a wire needs to be calculated

Answer 1

x^1=x+(coefficient of linear expansion called alpha)*xt
x^1=New length
x=Original length
t=change in temperature
{values are given in table form in Physics or Engineering books}

Answer 2

The coefficient of linear expansion (alpha) is given by:

(alpha) = (Lt - Lo)/Lo*delta(t)
where Lt = the length at temperature t degrees
Lo = the original length
delta(t) = the change in temperature.
(alpha) is the coefficient of linear expansion.

If we represent Lt - Lo as the change in length delta(L)

delta(L) = (alpha)*Lo*delta(t)

Answer 3

delta length = (alpha) (Length) (delta temperature)

where
alpha = coefficent of linear thermal expansion
delta temperature = temperature final - temperature initial
length = initial length
delta length = change in length from initial

Answer 4

not really. the coefficent of linear expansion for steel is 0.0000067"/in deg F if it is hot enough and long enough, it might grow 1/16" which is why they have gaps between railroad irons.