First one, for instance they become conductors or insulators depending on the temperature!
To solve this problem, we will apply the concepts related to the linear deformation of a body given by the relationship between the load applied over a given length, acting by the corresponding area unit and the modulus of elasticity. The mathematical representation of this is given as:

Where,
P = Axial Load
l = Gage length
A = Cross-sectional Area
E = Modulus of Elasticity
Our values are given as,
l = 3.5m
D = 0.028m

E = 200GPa

Replacing we have,




Therefore the change in length is 1.93mm
Answer: 11.2 AU
Explanation:
Applying Kepler's 3rd law, we can find out the average distance of planet B to the star.
This Law states that for planets orbiting a same star, there exists a fixed relationship between the average distance to the star, and the period of his orbit around it, as follows:
K = T² / d³
So , in this case, we can write:
(da)³ / Ta² = (db)³ / (Tb)²
Solving for db:
db = ∛8³.(1170)² / 710² = ∛1390.4 = 11.2 AU