A single upward pulse is sent along string A toward string B; the wave speed in A is…
PHYSICS · Subjective · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics
Problem
A single upward pulse is sent along string A toward string B; the wave speed in A is 30 m s⁻¹, in B it is 20 m s⁻¹. String B is joined to string C, where the wave speed is 50 m s⁻¹. Identify the orientation (upright or inverted) of the reflected pulses produced at
(i) the A–B boundary back into A,
(ii) the B–C boundary back into B, and
(iii) the B–A boundary when the pulse returning from C reaches it again.