Light is an electromagnetic wave and travels at a speed of 3.00 × 108 m/s. the human eye is most sensitive to yellow-green light, which has a wavelength of 5.49 × 10-7 m. what is the frequency of this light?

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.