What is the wave number of a wave whose displacement, y is defined by the equation y = 25 cos (280t – 75x) in metres?*1 point28/m25/m75/m84/m
Question
What is the wave number of a wave whose displacement, y is defined by the equation y = 25 cos (280t – 75x) in metres?*1 point28/m25/m75/m84/m
Solution 1
The wave number of a wave is represented by the coefficient of x in the wave equation. In the given equation, y = 25 cos (280t – 75x), the wave number is represented by 75. Therefore, the wave number of the wave is 75/m.
Solution 2
The wave number of a wave is represented by the coefficient of x in the wave equation. In the given equation, y = 25 cos (280t – 75x), the wave number is represented by 75. Therefore, the wave number of the wave is 75/m.
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