Answer:
3.52176 x 10^-10 N
Explanation:
Fg = 3.52176 x 10^-10 Newton
There are two atoms of two types:-
1st) Iron (Fe) - METAL
2nd) Oxygen (O)- NON -METAL
Fe + O2 -----> Fe2O3
Please check attachment for the answer
Answer:

Explanation:
Given:
- cross sectional area of the wire,

- density of aluminium wire,

- young's modulus of the material,

- wave speed,

<u>We have mathematical expression for strain as:</u>
...............................(1)
and since, 
where, T = tension force in the wire
equation (1) becomes:
............................(2)
<u>Also velocity ofwave in tensed wire:</u>
...................................(3)
where:
linear mass density of the wire

Now, equation (3) becomes

............................(4)
Using eq. (2) & (4) for tension T


putting the respective values


The answer is the Milky Way .