00:02
Hi, here this given problem it includes five different problems.
00:07
The first one, the answer is electrostatic force of repulsion between the electrons on the ground surface and the surface of our feet.
00:56
It prevents gravity from pulling us through the ground to the center of earth.
01:37
So here we can say option, the last option, option, option e is correct.
01:50
Now there is one more problem.
01:52
The second question, it is having a charge, a point charge here, at a position, 0 .1 .00 meter.
02:07
The magnitude of charge that is minus 4 .00 nanoculum.
02:15
We have to find x component, horizontal component of electric field due to this negative charge at a point p whose coordinates are 4 means along positive x -axis 4 and minus 2 meter.
02:34
So this distance here it will be 4 and this distance overall distance it will become 2 plus 1 means this is 3 meter and this is 4 meter.
02:46
And as we know, electric field is always directed towards the negative charge.
02:51
So direction of electric field is here towards the charge.
02:55
This angle is theta.
02:57
If this angle is supposed to be theta, its x component, x component means horizontal component of electric field, that will be along negative.
03:04
X -axis.
03:07
To find this component, first of all we should have the value of this angle, 10 theta, it will be given by perpendicular 3 meter by base, which is 4 meter.
03:18
Means this is 0 .75.
03:21
So this angle theta will be given by 10 inverse of 0 .75, which comes out to be equal to 36 .9 degree...