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Chapter 10_ Problem 029 An early method of measuring the speed of light makes use of rotating slotted wheel: beam of light passes through slot at the outside edge of the wheel, as in the figure travels to distant mirror; and returns to the wheel just in time to pass through the next slot in the wheel: One such slotted whee has radius of 8. jdb168 slot 5 cm and 140 slots at its edge Measurements taken when . 9999 slot daftar