Question: I need the answer as soon as possible 4. Light with an energy flux of 18 W/cm falls on a non reflecting surface at normal

I need the answer as soon as possible

4. Light with an energy flux of 18 W/cm falls on a non reflecting surface at normal inci- dence. If the surface has an area of 20 cm? find the average force exerted on the surface during a 30 minute time span. 346

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