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15. An 88.9 MHz FM radio station emits electromagnetic waves in all directions. What is the frequency of the radio waves emitted by the station? (4 points) At a radio located 100 km from the radio station, the average intensity of the radio waves is measured to be 3.98 x 107W/m². What is the root-mean-square value of the electric field at this point? (4 points) What is the root-mean-square value of the magnetic field at the location of the radio? (4 points) in What would be the force acting on a 5 cm by 5 cm square of paper at the location of the radio due to the radio waves? The paper is held perpendicular to the incoming wave, and the wave is completely absorbed by the paper. (4 points)