The mean distance between earth and the sun is 1.50 × 1011 m. the average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 w/m2. assuming the sun emits radiation uniformly in all directions, determine the total power radiated by the sun.

Which sentences describe point source pollution? in this type of pollution, the source of the pollution is single and easily identifiable. when runoff water from the melting of snow mixes with debris, it creates pollution. the runoff water, mixed with pollutants, reaches large areas with disastrous effects. alternatively, when a wastewater treatment plant releases harmful chemicals into a stream, the chemicals pollute the stream water because they are not treated for safety.