(b) If wave 1 has a frequency of 428 Hz and the beat frequency is 2 Hz, what is the frequency of wave 2? O426 Hz O430 Hz The frequency could be 426 Hz or 430 Hz O None of the above
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- What beat frequency would be heard by a tuba player in a marching band, of a note with a frequency of 449 Hz and the notes echo off a stationary building; if he is walking towards the building at a speed of 1.79 m/s, on a hot day with a temperature of 32.5 degC?wave, travelinp vith a speed f wavelength of f this of 3.50%, has 20 cm. Calaulate a the frequency しaue.A dart gun contains a spring of spring constant k = 16 N/m which is used to shoot a dart of mass m. The dart leaves the gun at a speed of v = 3.1 m/s after the spring is compressed 1 cm. what is the darts speed when it hits the floor (vf in m/s) if it is fired horizontally at a height of h = 2 m what angle in degree does the darts final velocity make with the horizontal?
- 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 traA rope of mass m and length L hangs from a ceiling. (1) Show that the wave speed on the rope at a distance y above the lower end is v = (2) Show that the time for a pulse to travel the length of the rope is At = = 2√/L/g. gy.Question7