Electromagnetic wave 1 has a maximum electric field of 58V/m , and electromagnet

Question

Electromagnetic wave 1 has a maximum electric field of 58V/m , and electromagnetic wave 2 has a maximum magnetic field of 1.7?T .

Part A

Which wave has the greater intensity?

First or Second wave?

Part B

Calculate the average intensity of the first wave.

Express your answer using two significant figures.

I1= ________W/m2

Part C

Calculate the average intensity of the second wave.

Express your answer using two significant figures.

I2= ________W/m2

I1= ________W/m2

Part C

Calculate the average intensity of the second wave.

Express your answer using two significant figures.

I2= ________W/m2

Explanation / Answer

For wave 1)

I = E2/(2uc)

I = (58)2/(2)(4pi X 10-7)(3 X 108)

I = 4.5 W/m2

Fo wave 2

I = cB2/2u

I = (3 X 108)(1.7 X 10-6)2/(2)(4pi X 10-7)

I = 340 W/m2

Thus wave 2 has greater intensity

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