00:01
We have to find the coordinates of each part.
00:07
So for q1, the coordinates as origin as it is located on the origin.
00:13
So it has a coordinate of 0 ,0.
00:16
For q2, the coordinates are d ,0.
00:21
And for q3, the coordinates are d ,cos 60, minus d ,d sin 60 degrees.
00:38
The distance is d and it is an equilateral triangle so it is making 60 degrees with the x -axis.
00:46
That's why it has a coordinate of this, like this.
00:49
The charge on q1 is 7 microcoulombs, which is 7 times 10 to the power of minus 6 coulombs.
01:01
Q2 has a charge of minus 5 .5 microcoulombs, or minus 5 .5 times 10 to the power of 6 coulombs.
01:11
Q3 has a charge of 2 .9 microcoulombs, which is equal to 2 .9 times 10 to the power of minus 6 coulombs.
01:19
Now the force on q3 due to q1 is in this direction.
01:27
So its components will be the force on 3 due to 1 is f13.
01:38
Its components are f13x in the x -direction and f13y in the y -direction...