00:01
In this problem, we're saying, to consider a conductor spherical of radio that we see this radio is of 10 centimeters charged with a cargo q of 5 nanocombs, this would 5 .10 at the minus 9 coloms.
00:17
For the part a, this problem us piqued in calculate the camp electrostatic created in the points situated at a distance of 5 centimeters and 15 centimeters.
00:26
The change of the stratatical, in the case of a conductor sphery, depends of the distance respect to the conductor, and it's done by the second expression.
00:36
First, we're going to when we're when we're the the camp is null, is zero.
00:44
This is if the distance to the center is less than the radio of this conductor.
00:51
Now, it would be done by the constant of color for the carga, divided by the distance, the quadrador, if the radio is major or equal to the radio of the conductor.
01:04
In this case, for the first case, where the radio is equal in the position is equal to 5 centimeters, the camp electrical would simply 0, because it's inside the conductor.
01:18
Now, when the radius is of 15 centimeters, that in meters would be 0 .15 meters, simply we have to use the equation that we do.
01:29
That would be the constant of colom that took a value of 9, the cargues that is 5 % 10 to the minus 9, and this is divided by the distance that is 0 .15 to quadrado.
01:42
This would notarer a value of 2 ,000 newtons for coulon.
01:48
This would be the result for the first part of the problem.
01:52
Now, for the part b, we need to the potential in points in points situated at 10 centimeters of the center of the sphere.
02:04
The potential electrostatic for a conductor spherical is constant in the conductor and depends the distance r out of him.
02:13
This means that the potential in this conductor is the constant of colon for the the charge divided by the radio of the conductor, while it's the constante of coulone for the cargare divided by the distance.
02:29
The first is if the radio is minor or equal to the radio of the conductor, and the other expression is if the position is major than the radio of the conductor...