String Instruments

1
String Instruments

• In a stringed instrument, there are strings of
  various thicknesses. Generally, for a given
  material, the thicker the string the higher the
  linear density. Which of the following is true
  of these different strings? (Assume that the
  tensions are similar.)
• The thickest string produces the highest
  frequency, the thinnest string produces the
  lowest.
• The thinnest string produces the highest
  frequency, the thickest string produces the
  lowest.
• None of the above.

2
String Instruments

• In a stringed instrument, a string is tuned by
  changing its tension. If a string is playing
  flat (too low a frequency), you should
• increase the tension.
• decrease the tension.
• None of the above.

3
String Instruments

• In some stringed instruments, there are frets you
  can press the string against, to shorten the
  length of string that is vibrating. By doing
  this, you would
• increase the frequency and pitch.
• decrease the frequency and pitch.
• None of the above.

4
Speed of Sound

• The bulk modulus of air is proportional to the
  Kelvin temperature of the air. If the Kelvin
  temperature of the air increases by 1 (about 3
  degrees near room temp), then
• the speed of sound in the air will increase by
  1.
• the speed of sound in the air will decrease by
  1.
• the speed of sound in the air will increase by
  less than 1.
• the speed of sound in the air will decrease by
  less than 1.