URGENT: If an electromagnetic wave has a frequency of 6 x 10^5 Hz, what is its wavelength? Use v/f. The speed of light is 3 x 10^8 m/s.

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.