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a) You stand 11.3 m away from an isotropic point source of light and measure the...

a) You stand 11.3 m away from an isotropic point source of light and measure the light’s electric field amplitude to be 2.4 V/m. What total power is the source emitting? Express your answer in watts.

b) The electric field in an electromagnetic wave traveling in vacuum has the following wave function: Ey = (3.1 V/m) sin⁡[(1.7 × 106 rad/m)z + ωt]. What is the frequency of the wave? Express your answer in THz (terahertz). Tera- is 1012.

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