An earthquake P wave traveling strikes a boundary within the Earth between two kinds of material. If it approaches the boundary at an incident angle of 52° and the angle of refraction is 31°, what is the speed in the second medium?
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- For testing purposes, a musical instrument manufacturing company creates a device so that when you blow into one end with your instrument, sound comes out the other end in opposite directions. A sound technician uses a whistle and generates sound waves with a frequency of 280 Hz. The waves travel in opposite directions in a sound studio, are reflected by end walls, and return. The studio is 43.0 m long and the whistle is located 14.0 m from one end. What is the phase difference (in degrees) between the reflected waves when they meet at the source of the sound? The speed of sound in air is 343 m/s. 17044.898X See if you can determine the path difference and the wavelength, and then express the path difference in terms of the wavelength. What part of the path difference is of interest to us when finding the phase difference? How is this part of the path difference related to the phase difference? • Need Help? Read ItA water bug on the surface of a pond bobs up and down three times per second on ripples with wavelength 10.5 cm. A fish resting at the surface of the pond is 8.5 m from the water bug. How long does it take a ripple passing the water bug to reach the fish?For testing purposes, a musical instrument manufacturing company creates a device so that when you blow into one end with your instrument, sound comes out the other end in opposite directions. A sound technician uses a whistle and generates sound waves with a frequency of 200 Hz. The waves travel in opposite directions in a sound studio, are reflected by end walls, and return. The studio is 50.0 m long and the whistle is located 14.0 m from one end. What is the phase difference (in degrees) between the reflected waves when they meet at the source of the sound? The speed of sound in air is 343 m/s.
- If wave of wavelength=100m in deep water is observed from a moving ship with constant speed of 7m/s. When the wave propagates in the opposite direction of the ship, find the corresponding encounter frequency observed from the ship.Current Attempt in Progress (a) Neil A. Armstrong was the first person to walk on the moon. The distance between the earth and the moon is 3.85 x 108 m. Find the time it took for his voice to reach the earth via radio waves. (b) Someday a person will walk on Mars, which is 5.60 × 1010 m from the earth at the point of closest approach. Determine the minimum time that will be required for a message from Mars to reach the earth via radio waves. (a) Number i Units (b) Number i UnitsA wave propagation is represented by y = 4 sin (20nt – x) where x is in cm and t is in s. Calculate the 4. (a) (b) (c) Wavelength Frequency Velocity [1 = 12 m; f = 10 Hz; v = 120 ms-1]
- Imagine you are at a location where some incident light source provides light at an intensity of 25 W/m^2. Now you move 5 time closer to the light source (aka your distance is 1/5 its initial value). What is the intensity of the light at this new locationIn the figure, a French submarine and a U.S. submarine move toward each other during maneuvers in motionless water in the North Atlantic. The French sub moves at speed VF = 53.00 km/h, and the U.S. sub at vus = 68.00 km/h. The French sub sends out a sonar signal (sound wave in water) at 1.000 × 103 Hz. Sonar waves travel at 5470 km/h. (a) What is the signal's frequency as detected by the U.S. sub? (b) What frequency is detected by the French sub in the signal reflected back to it by the U.S. sub? (a) Number i French Unite VF LITHDI11111111 UT U.S.