Geography, 29.01.2020 05:51 clairajogriggsk

An earthquake p wave passes across a boundary in rock where its velocity increases from 6.5 km/s to 8.0 km/s. if it strikes this boundary at 30o, what is the angle of refraction?

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An earthquake p wave passes across a boundary in rock where its velocity increases from 6.5 km/s to...