Item 13 A horizontal cylindrical tank 2.26m in diameter is half full of water. T

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Item 13 A horizontal cylindrical tank 2.26m in diameter is half full of water. The space above the water is filled with a pressurized gas of unknown refractive index. A small laser can move along the curved bottom of the water and aims a light beam toward the center of the water surface (the figure (Figure 1)) You observe that when the laser has moved a distance S 1.08m or more (measured along the curved surface) from the lowest point in the water, no light enters the gas. Figure 1 of 1 Gas Laser Part A What is the index of refraction of the gas? Submit My Answers Give U Part B How long does it take the light beamto travel from the laser to the rim of the tank when S >1.08m ns Submit My Answers Give U Part C How long does ake the light beam to travel from the laser to the rim of the tank when S

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