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1. Given the energy range of a radiation source to be 0.5 ev. Calculate the same energy range in joules. Don't use the correction factor or 1v= 1.6Χ10^-10joules.

2. A wall was constructed in the middle ofthe "near field" region of Non-ionizing redaction source that has a peak power of 50 meters. The diameter of its transmitting antenna is 4 meters. Determine the attenuation factor for this wall.

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