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What is the intensity of an electromagnetic wave that delivers 3000 joules of energy to a 0.5 m\(^2\) area every 3.0 seconds?

Answer :

The intensity of an electromagnetic wave can be calculated by dividing the energy delivered by the wave by the area over which it is distributed and the time it takes to deliver that energy. In this case, the wave delivers 3000 joules of energy to a 0.5 m2 area every 3.0 seconds.

To calculate the intensity, we can use the formula:

Intensity = Energy / (Area * Time)

Plugging in the given values, we have:

Intensity = 3000 joules / (0.5 m2 * 3.0 sec)

Simplifying the equation, we get:

Intensity = 3000 joules / 1.5 m2 * sec

Now we can cancel out the units:

Intensity = 2000 watts / m2

Therefore, the intensity of the electromagnetic wave is 2000 watts per square meter.

In conclusion, the intensity of the electromagnetic wave that delivers 3000 joules of energy to a 0.5 m2 area every 3.0 seconds is 2000 watts per square meter.

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