Explanation:
Formula for angle subtended at the center of the circular arc is as follows.
![\theta = \frac{S}{r}](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20%5Cfrac%7BS%7D%7Br%7D)
where, S = length of the rod
r = radius
Putting the given values into the above formula as follows.
![\theta = \frac{S}{r}](https://tex.z-dn.net/?f=%5Ctheta%20%3D%20%5Cfrac%7BS%7D%7Br%7D)
= ![\frac{4}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B2%7D)
= ![2 radians (\frac{180^{o}}{\pi})](https://tex.z-dn.net/?f=2%20radians%20%28%5Cfrac%7B180%5E%7Bo%7D%7D%7B%5Cpi%7D%29)
= ![114.64^{o}](https://tex.z-dn.net/?f=114.64%5E%7Bo%7D)
Now, we will calculate the charge density as follows.
![\lambda = \frac{Q}{L}](https://tex.z-dn.net/?f=%5Clambda%20%3D%20%5Cfrac%7BQ%7D%7BL%7D)
= ![\frac{18 \times 10^{-9} C}{4 m}](https://tex.z-dn.net/?f=%5Cfrac%7B18%20%5Ctimes%2010%5E%7B-9%7D%20C%7D%7B4%20m%7D)
= ![4.5 \times 10^{-9} C/m](https://tex.z-dn.net/?f=4.5%20%5Ctimes%2010%5E%7B-9%7D%20C%2Fm)
Now, at the center of arc we will calculate the electric field as follows.
E = ![\frac{2k \lambda Sin (\frac{\theta}{2})}{r}](https://tex.z-dn.net/?f=%5Cfrac%7B2k%20%5Clambda%20Sin%20%28%5Cfrac%7B%5Ctheta%7D%7B2%7D%29%7D%7Br%7D)
= ![\frac{2(9 \times 10^{9} Nm^{2}/C^{2})(4.5 \times 10^{-9}) Sin (\frac{114.64^{o}}{2})}{2 m}](https://tex.z-dn.net/?f=%5Cfrac%7B2%289%20%5Ctimes%2010%5E%7B9%7D%20Nm%5E%7B2%7D%2FC%5E%7B2%7D%29%284.5%20%5Ctimes%2010%5E%7B-9%7D%29%20Sin%20%28%5Cfrac%7B114.64%5E%7Bo%7D%7D%7B2%7D%29%7D%7B2%20m%7D)
= 34.08 N/C
Thus, we can conclude that the magnitude of the electric eld at the center of curvature of the arc is 34.08 N/C.
Is the physical phenomena arising from the force caused by magnet objects that produce fields that attract or repel other objects while magnetic field is a region around the magnetic material or a moving electric charge within the force of magnetism acts
Joseph's experiment could be improved by using the same antenna at each part of the house during each trial instead of using different antenna. By doing so, he can obtain accurate results how is the signal in different part of the house under the same conditions (despite the location). So, he will see the dependence of the signal on the location. If he uses different antenna, than this antenna can also have influence of the signal.
<span>There is a net force of 15 N allowing Levi and Clara to move the box would be your answer which is B</span>
It has been hypothesized, and some studies have supported the conjecture,
that certain species of insects and birds are able to sense the direction of external
magnetic fields.
I don't think there is any such notion where human beings are concerned.