force=k(3e-11)^2/(8e-5)^2=9/64 k e-12
k=9e9
force=about 81/64 e-3 N
check that.
When sugar is poured from the box into a bowl , the rubbing of the sugar grains create a static charge that repels the grains , and causes the sugar to go flying out in all directions. If each of two grains acquires a charge of 3.0x10^-11 C at a separation of 8.0x10^-5 m, with what force will they repel eachother
1 answer
1 answer