What you can use is coulomb's inverse square law that states that force varies inversly as the square of distance. <span>It menas that the force is calculated by dividing by distance squared. what this does is essentially as the distance doubles, the forces is reduced by a factor of 4 or can be divided by 4. Force at 0.5m=2.3328N. And brings you ti the answer</span>
Sound waves the force of said sound wave would knock you backwards
Answer:
The answer would be 10.8 billion light years
K.E1=1/2×100×3²
=50×9
=450J
K.E2=1/2×100×36
=50×36
=1800J