What charges must the particles have to create the electric field shown? O A. X is positive and Y is negative.
O B. X and Y are both positive.
O C. X and Y are both negative.
O D. X is negative and Y is positive.

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Acorporation gives out its profits as dividends paid to whom?

An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b.what is the wavelength of the wave? c.what is the amplitude of the magnetic field? d.what is the intensity of the wave?