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- (a) Seismographs measure the arrival times of earthquakes with a precision of 0.100 s. To get the distance to the epicenter of the quake, geologists compare the arrival times of S- and P-waves, which travel at different speeds. If S- and P-waves travel at 4.00 and 7.20 km/s, respectively, in the region considered, how precisely can the distance to the source of the earthquake be determined? (b) Seismic waves from underground detonations of nuclear bombs can be used to locate the test site and detect violations of test bans. Discuss whether your answer to (a) implies a serious limit to such detection. (Note also that the uncertainty is greater if there is an uncertainty in the propagation speeds of the S- and P-waves.)A sunbather stands waist deep in the ocean and observes that six crests of periodic surface waves pass each minute. The crests are 16.00 meters apart. What is the wavelength, frequency, period, and speed of the waves?How many times a minute does a boat bob up and down on ocean waves that have a wavelength of 40.0 m and a propagation speed of 5.00 m/s?
- The energy of a ripple on a pond is proportional to the amplitude squared. If the amplitude of the ripple is 0.1 cm at a distance from the source of 6.00 meters, what was the amplitude at a distance of 2.00 meters from the source?Ex. 39 The equation of a wave can be 2n represented by Y= 0.04 sin (320 t-x) where 0.08 x and y are in meter and t is in second. Find the amplitude, frequency propagation of the wave. and velocity ofThe equation of a funguessive wave is Y= sint (4t 00:25) 0.025 The quantities are expressed in SI units. Find amplitude frequency, wavelength I nelocity of wave.
- Q1(a) Analyze the polar form of this waveform in Figure Q1(a). 60 310 Figure Q1(a) estEx. 19 : The wave equation is represented by Y = 0.1 sin 4n quantities is in S.I. %3D 0.08 0.8 units, Calculate (1) wavelength and (2) Frequency.3T st+), find the -1 Consider a wave described by the wave function y (x,t)= 0.75m sin frequency of wave? O a. 4.67 Hz ОБ. 0.21 НZ O c. 0.51 Hz O d. 2.4 Hz
- The following waveform has been measured at a sweep time of t = 50 + 2%. us ст (7.4 ±0.1) cm The frequency is (2703 + 65) Hz (2.70 ± 51) kHz (300 ± 5) Hz O (270 ± 9) HzWrite down the equation of progressive wave having a frequency of 56 Hz, wave length 6.0 metre and amplitude 1.0 cm.The time period of a sine wave is 1/50 sec .lts frequency is O 50 Hz O 40 Hz О 20 Hz O 30 Hz