Which of the following frequencies are higher harmonics of a ...

[rosent76]

Which of the following frequencies are higher harmonics of a string with fundamental frequency of 150 Hz?
  a)200 Hz
  b)300 Hz
  c)400 Hz
  d)500 Hz
  e)600 Hz
 

  1.a
  2.b and e
  3.a, c, and e
  4.d
 

Question 2

As an airplane flying with constant velocity moves from a cold air mass into a warm air mass, the Mach number
  1.increases.
  2.decreases.
  3.remains the same.

[Madisongo23]

Answer to Question 1

2

Answer to Question 2

2

[rosent76]

Thanks for the timely response, appreciate it

[duy1981999]

Excellent