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Problem 15.14 12 of 30 Review | Constants | Periodic Table Part A (Figure 1) shows history graphs of two different points on a string as a wave pulse moves along the string. The blue curve is the history graph for the point at a = 1.0 cm, and What is the velocity (including the correct sign for its direction) of this wave? the green curve is for the point at x = -3.0 cm. Express your answer with the appropriate units. ? m V- = 8 . 10 S Submit Previous Answers Request Answer X Incorrect; Try Again Figure