A string on a guitar is plucked. If, at this instant, someone ...

[Charlie]

A string on a guitar is plucked. If, at this instant, someone touches this guitar string at its center, at which of its harmonics given below would the string be able to vibrate?<--EndFragment--> sity?
  1.at the first harmonic only
  2.at the first and third harmonics
  3.at the second and fourth harmonics
  4.at the first and second harmonics

Question 2

Within a standing wave on a string,
  1.all points along the string that oscillate do so within a range of different frequencies and amplitudes.
  2.all points along the string that oscillate do so at the same frequency but within a range of different amplitudes.
  3.all points along the string that oscillate do so within a range of different frequencies but at the same amplitude.
  4.all points along the string that oscillate do so at the same frequency and amplitude.

[irishcancer18]

Answer to Question 1

3

Answer to Question 2

2

[Charlie]

Excellent

[carlsona147]

Gracias!