As oppositely moving pulses of the same shape (oneupward, one downward) on a string pass
Chapter 18, Problem 9(choose chapter or problem)
As oppositely moving pulses of the same shape (oneupward, one downward) on a string pass through eachother, at one particular instant the string shows no displacementfrom the equilibrium position at any point.What has happened to the energy carried by the pulsesat this instant of time? (a) It was used up in producingthe previous motion. (b) It is all potential energy. (c) Itis all internal energy. (d) It is all kinetic energy. (e) Thepositive energy of one pulse adds to zero with the negativeenergy of the other pulse.
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