Physics, 30.11.2019 01:31 jaliyahskt510

What is the time tb it will take for point b of the wavefront to encounter the vacuum/material interface? note that you will express your answer in a slightly unusual way. express your answer numerically in units of t1 (the time it takes light to travel a distance d in a vacuum). use three significant figures. view available hint(s)

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What is the time tb it will take for point b of the wavefront to encounter the vacuum/material inter...