The electric force between two charged particles is 0.18 newtons. If the
distance between them is increased by a factor of 3.0, what will the new
electric force be?
0
0.36 newtons
0.02 newtons
0
0.06 newtons
1.62 newtons

Force between two charges is 0.02 N when distance is increased by factor of 3

Explanation:

As we know that the two charges will attract or repel each other when they are placed near to each other

Here we know that electrostatic force is given as

here we know that two charges exert 0.18 N force on each other when they are placed at distance "r" from each other

Now when same charges are placed distance "3r" then we have

so we have

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min