Q. The magnitude of vector vector A is 31.6 units and points in the direction 321° counterclockwise from the positive x-axis. Calculate the x-component of this vector.
Q. In practice, we often have an unknown charge distribution and measure the electric field near it in order to determine the type of charge distribution. You have looked at Point charges, Dipoles, long lines of charge, and large flat sheets of charge.
At a distance of 5 cm you measure an electric field of 25000 N/C. At a distance of 10 cm you measure an electric field of 3125 N/C. What is the charge distribution?