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ASSIGNMENT 8 - WAVES - Sem 04 2022 1 . Complete the following statements: A mechanical wave is a wave in which energy is transferred
ASSIGNMENT 8 - WAVES - Sem 04 2022 1 . Complete the following statements: A mechanical wave is a wave in which energy is transferred along [1] Mechanical waves travel at than the speed of light [1] An example of a mechanical wave is [1] In an electromagnetic wave, energy is transferred of matter. [1] Electromagnetic waves travel at the speed of [1] An example of an electromagnetic wave is [1] In a transverse wave, vibrations occur at angles to the direction of [1] travel of the wave. An example of a transverse wave is [1] In a longitudinal wave, vibrations occur [1] An example of a longitudinal wave is [1] All objects have a frequency of vibration. When energy is supplied to a system at its natural frequency of vibration, the system vibrates with amplitude. This phenomenon is called [3] 2. How is sound produced? [2] Complete the table below which describes characteristics of sound. The first row is done for you. [2] Characteristic Physical quantity related to characteristic Pitch Frequency Loudness Presence of several frequencies called harmonics 3. The diagram below shows standing waves on a string vibrating at its fundamental frequency of vibration. The string has a length of 1.60 m. First Harmonic (fundamental) B (a) What are A, B and C called? A B C [3](b) How much is the wavelength of the wave? [1] (c) Another string of wavelength 2.0 m is vibrating at its fundamental frequency f. If the speed of the wave on the string is 960 m/s, calculate the fundamental frequency f. [1] 4. If the pitch of a vibrating skin of a drum is assigned a value of 1.000, what is the pitch of the skin vibrating in its second overtone? (See Formulae Sheet.) [1] 5. Complete the following: (a) Tides are formed by the [1] (b) Tsunamis are produced from [1]
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