State consists of photons with an average wavelength

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At noon on a clear day, sunlight reaches the earth\'s surface at Madison, Wisconsin, with an average power of approximately 9.00 kJ·s-1·m-2. If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 3.20 cm2 area per second?

Reference no: EM13186335

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