At one instant, the electric and magnetic fields at one point of an electromagnetic wave are E (200i 300j 50k) V m and B B 0 (7 3i 7 3 j ak) T a What are the values of a and B 0 b What is the Poynting vector at this time and position

Question: At one instant, the electric and magnetic fields at one point of an electromagnetic wave are E = (200i + 300j - 50k) V/m and

At one instant, the electric and magnetic fields at one point of an electromagnetic wave are E = (200î + 300ĵ - 50k̂) V/m and B = B₀(7.3î - 7.3 ĵ + ak̂) μT.
a. What are the values of a and B₀?
b. What is the Poynting vector at this time and position?

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