A disk of radius 15.6 cm has a total charge 4.2 x 10-C distributed uniformly all over the disk. Part 1 V Your answer is correct. (a) Using the exact equation, what is the electric field 1 mm from the center of the disk? (Enter the magnitude. Enter your answer to at least three significant figures.) 3065876.377 N/C Attempts: 1 of 10 usedPart 2 V Your answer is correct. (b) Using the same exact equation, find the electric field 3 mm from the center of the disk. (Enter the magnitude. Enter your answer to at least three significant figures.) 2984611.38 N/C Attempts: 1 of 10 used Part 3 Your answer is incorrect. (c) What is the percent difference between these two numbers? %