3. (a) If the speed of the waves A and B is 15 m/s in the diagram below, determine the amplitude, wavelength, and freque

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3 A If The Speed Of The Waves A And B Is 15 M S In The Diagram Below Determine The Amplitude Wavelength And Freque 1 (45.08 KiB) Viewed 38 times

3. (a) If the speed of the waves A and B is 15 m/s in the diagram below, determine the amplitude, wavelength, and frequency of each wave. 0.50 m 0.25 m 0 -0.25 m- -0.50 m B A- 2.0 4.0 x (m) 6.0 (8 marks) (b) Suppose that sound is emitted uniformly in all directions by a public address system. The intensity at a location 25 m away from the sound source is 50 x 104 W/m². What is the intensity at a spot that is 100 m away? (8 marks) (c) Jupiter subtends an angle of 7.5 x 10-5 radians when viewed with the unaided eye. An astronomical telescope has an eyepiece with a focal length of 0.08 m. When Jupiter is viewed using this telescope, it subtends an angle of 3.0 x 10-3 radians. Find the focal length of the telescope's objective lens given this information. (9 marks) 2/5