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Analyze the exercise based on fill ups and true or false:
1.
A whistle is giving out a sound of frequency \(450\) \(Hz\), approaches a stationary observer at a speed of \(33\) \(m/s\). The frequency heard by the observer is (speed of sound \(=\) \(330\) \(m/s\)).
2. Waves created by Earth Quake are Infrasonic.
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