Question

At one instant, the electric and magnetic fields at one point of
an electromagnetic wave are *E*?
=(220*i*^+300*j*^?60*k*^)V/m and *B*?
=(7.8*i*^?7.3*j*^+*a**k*^)*B*0.

1) What is the value of *a*?

2) What is the value of *B*0?

3) What is the Poynting vector at this time and position? Find
the *x*-component.

4)Find the *y*-component.

5) Find the *z*-component.

Answer #1

At one instant, the electric and magnetic fields at one point of
an electromagnetic wave are E⃗
=(210i^+340j^−60k^)V/mE→=(210i^+340j^−60k^)V/m and B⃗
=(7.1i^−8.0j^+ak^)B0B→=(7.1i^−8.0j^+ak^)B0.
Part B
What is the value of B0B0?
Express your answer using two significant figures.
B0 =
μT
Part C
What is the Poynting vector at this time and position? Find the
xx-component.
Express your answer to two significant figures and include the
appropriate units.
Sx =
Part D
Find the yy-component.
Express your answer to two significant figures...

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