A short pulse 0.30 m long moves along a rope at 4.0 m/s and enters a second rope in…

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

A short pulse 0.30 m long moves along a rope at 4.0 m/s and enters a second rope in which waves travel at 6.0 m/s. After the pulse is completely within the second rope, what is its length? (a) 0.30 m0.30\text{ m} (b) 0.20 m0.20\text{ m} (c) 0.45 m0.45\text{ m} (d) 0.60 m0.60\text{ m}

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