# Two charges of # -7 C # and # 4 C # are at points # (4, 7 ,-8) # and # ( -1 , 3, -8 )#, respectively. Assuming that both coordinates are in meters, what is the force between the two points?

##### 1 Answer

May 26, 2016

#### Answer:

The force is

#### Explanation:

The Coulomb force is

We can calculate using the Pitagora's theorem in three dimensions:

The force is

The minus sign means that the two charges are attracting each other.