The class is about Electricity and Magnetism. The website wants exactly the perfect answer, and in the same metric system units that are stated on the calculators that are on the picture for the question; if not, it'll mark it wrong.

A thin rod bent into the shape of an arc of a circle of radius R carries a uniform charge per unit length A (in units of C/m). The arc subtends a total angle 20 (given in degrees), symmetric about the x axis. Determine the electric field at the origin. What is the magnitude IEl of the electric field? Express your answer in terms of the quantities R, 2, 60, and k, where k is the proportionality constant in Coulomb's law. IEl : N/C abc sin(x) Ox10 Submit Reset Reset All .Draw a sketch showing the infinitesimal electric field vector at the origin due to an infinitesimal element of arc of length R d0. Use symmetry to figure out the direction of the electric field resulting from superposition of all the infinitesimal electric field vectors from each infinitesimal element of arc. .Use Coulomb's law to write an expression for the appropriate vector component of the infinitesimal electric field at the origin due to an element of charge on the arc. Then integrate to find the field due to the whole arc. .Note that the subscript of @ is a zero, not an o. .Remember to convert degrees to radians in the argument of any trig functions you might use. What is the direction of the electric field? Give the angle 0 in degrees between the electric field vector and the positive x axis. 0 = abc sin(x 1X10' Submit Reset Reset All