I need help with the following problem: Find the center of mass of the given quarter of a DISK. (25 points)Remember, this disk has surface area and mass density,σMake sure, you show all the procedure to find the xcm and ycm.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples