We can reasonably model a $75-$W incandescent lightbulb as a sphere $5\mathrm{.}5$ cm in diameter. Typically, only about $\backslash (5\backslash \%\backslash )$ of the energy goes to visible light; the rest goes largely to nonvisible infrared radiation.

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Part A

What is the visible light intensity at the surface of the bulb?

Express your answer using two significant figures.

Part B

What is the amplitude of the electric field at this surface, for a sinusoidal wave with this intensity?

Express your answer using two significant figures.

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Part C

What is the amplitude of the magnetic field at this surface, for a sinusoidal wave with this intensity?

Express your answer using two significant figures.

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