Estimate the maximum distance the approaching car can be..... Traveling down a l

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Estimate the maximum distance the approaching car can be..... Traveling down a long, straight Kansas road late at night, a driver notices a light approaching in the distance. After a bit the driver notices that the single light has split into two distinct headlights. Estimate the maximum distance the approaching car can be assuming that the drivers pupils are 4 mm in diameter. the approading car's headlights are 5 ft apart. the headlights emit primarily 580 nm wavelength light, and that the driver's eyesight is diffraction limited. After passing the oncoming car. the driver looks at the dashboard to check the speedometer. The driver notices that be can clearly read the numbers 0.8 m away if he pushes his head against the headrest, but they get blurry if he leans forward. What prescription eyeglasses (in Diopters) would this driver need to comfortably read a book 25 cm from his face? Assume the glasses would sit 2 cm in front of his eyes.

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Estimate the maximum distance the approaching car can be..... Traveling down a l

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