Answer: Your question does not make sense
Explanation:
A physical property can be seen or a change in color.
The answer is B because you can see when wood is rotting.
Sorry to say but I know that t(e introduction is first and the coda is last
A. Home birth
Hope this helps :)
force between two parallel wire is
f/l = mueo*i1i2/2pir
f/l = 2*10^-7*i1i2/rl
i2 = f*r/2*10^-7*i1
i2 = 342.9 A
