D: radio waves
Explanation:
radio wves are use to carry satellite signals
Answer:
% reduction in area = 54.26 %
percentage elongation = 43.16 %
Explanation:
a) percentage reduction in area 


% reduction in area =
b)percentage elongation 
+2 electron charges = 2x1.6x10^-19Coulombs
Explanation:
An electrified comb is charged comb ( let say by running it through the hair) and when it is brought in the proximity of pieces of paper, the pieces tend to cling to it. This happens because the charged comb induces an opposite charge in the paper pieces and as opposite charges attract each other, the pieces are clinged.