Harmonics problem. A square wave of frequency f contains harmonics (sine waves) at f, 3f, 5f, 7f, ... .Suppose a system responds to frequencies in the range 20-40 kHz but is insensitive outside of this range. EXAMPLE: Imagine applying a square wave with f = 30 kHz to this system. What is the shape of the response? [ a 30 kHz sine wave. ] QUESTION: Imagine applying a square wave with f = 10 kHz to this system. What is the shape of the response?

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.