A copper telephone wire has essentially no sag between poles 36.0 m apart on a winter day when the temperature is −20.0°C. How much longer is the wire on a summer day when the temperature is 34.0°C?

The extension is  

Explanation:

From the question we are told that  

     The length of the wire on a winter day is    

      The temperature on the winter day is  

      The temperature on a summer day is  

The the extension of the wire on a summer day is mathematically represented as

Where  

      is the  coefficient of linear expansion of copper with a values

substituting value  

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles