In the arrangement shown in the figure below, an object of mass m = 2.0 kg hangs from a cord around a light pulley. The length of the cord between point P and the pulley is L = 2.0 m. (Ignore the mass of the vertical section of the cord.) Vibrator P fe m (a) When the vibrator is set to a frequency of 130 Hz, a standing wave with six loops is formed. What must be the linear mass density of the cord? 6895 X kg/m (b) How many loops (if any) will result if m is changed to 4.50 kg? (Enter 0 if no loops form.) 0 X loops (c) How many loops (if any) will result if m is changed to 14 kg? (Enter 0 if no loops form.) 0 loops

Mjc5NTA2NTk3NjEz (b) 0.8 sec; 14 m/s (c) 0.4 sec; 7 m/s (d)0.8 sec; 3.5 m/s 4) Two identical sinusoidal waves travel in the same direction at the same speed with an amplitude A. The phase difference between the two waves is o = 69.8°. The amplitude of the resultant wave, Aresultant» is increased with respect to the amplitude of the individual waves, A, by: (a) 18% (b) 64% (c) 82% (d) 164% 5) Two identical sinusoidal waves with frequency of 20 Hz travel in the same đirection at the same speen The two waves originate from the same point but with a time difference At. The amplitude of th AV3. The minimum possible time difference between the starting moments resultant wave is Ares the two waves is, At =: (a) 1/120 sec (b)0477 sec (c) 1/80 sec (d)0.716 sec rleueths of 2.5 m travel in the same direction with the Ih difference. Wave-1 tra

In the arrangement shown in the figure below, an object of mass m = 4.0 kg hangs from a cord around a light pulley. The length of the cord between point P and the pulley is L = 2.0 m. (Ignore the mass of the vertical section of the cord.) Vibrator- (a) When the vibrator is set to a frequency of 180 Hz, a standing wave with six loops is formed. What must be the linear mass density of the cord? kg/m (b) How many loops (if any) will result if m is changed to 144 kg? (Enter 0 if no loops form.) loops (c) How many loops (if any) will result if m is changed 14 kg? (Enter 0 if no loops form.) loops