Two strings of identical mass per unit length are stretched with ...

[DelorasTo]

Two strings of identical mass per unit length are stretched with the same tension with their ends fixed, but one string is 0.33 cm longer than the other. Waves on these strings propagate at 34.0 m/s.
 
  The fundamental frequency of the shorter string is 258 Hz. What is the beat frequency when each string is vibrating at its fundamental frequency? A) 12.3 Hz
  B) 9.00 Hz
  C) 12.0 Hz
  D) 12.7 Hz
  E) 11.3 Hz

Question 2

A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 20 above the horizontal. How long is the jumper in the air before returning to the Earth?
 
  A) 0.21 s
  B) 0.42 s
  C) 0.84 s
  D) 1.3 s
  E) 1.6 s

[bigsis44]

Answer to Question 1

A

Answer to Question 2

C

[DelorasTo]

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[bigsis44]

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