Calculate the number of photons of green light
The human eye can percieve green light of wavelength 550 nm whenthe rate of incidence of radiation is 2.0 x 10-16J/s. Calculate the number of photons of green light of 550 nm wavelength that must fall on the retina per second to produce vision.
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A system is composed of 5 components, each of which is either working or failed. Consider an experiment that consists of observing the status of each component, and let the outcome be given by a vector (x1; x2; :::; x5) where xi = 1 if that compon
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Tidal effects in the Earth-Moon system are causing the Moon's orbital period to increase at a current rate of about 35 ms per century. Assuming the Moon's orbit around the Earth is circular, to what rate of change in the Earth-Moon distance does t
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