Askydiver jumped out of a plane, determine distance he distance he descended after 5 seconds. gravity is pulling him down at 10 m/s^2

concave lenses are used here. they spread the light out before it reaches the convex lens in the eye, therefore letting the image focus directly on the retina. hyperopia is known to you probably as farsightedness.

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vapour or gas assuming atmospheriv pressure

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.