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At noon on a clear day, sunlight reaches the earth's surface at Madison, Wisconsin, with an average intensity of approximately 4.00 kJ-s¯¹·m¯². If the sunlight consists of photons with an average wavelength of 510.0 nm, how many photons strike a 8.90 cm² area per second? photons per second: photons s
Pluto and its moon Hydra are separated by 64800 km. An undergraduate researcher wants to determine if the 5.08 m diameter Mount Palomar telescope can resolve these bodies when they are 7.40 × 10⁹ km from Earth (neglecting atmospheric effects). Assume an average wavelength of 575 nm. To determine the answer, calculate the ratio of the telescope's angular resolution OT to the angular separation OPH of the celestial bodies. от 0PH =