Answer:
Work is the change in energy and power is the rate of doing work.
The answer is that it can involve changing the shape of matter, or changing the speed or direction of an object.
The answer to number 1 is D and the answer for the second one is 2
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The frequency the student detect from waves omitted from the fork and waves coming from the wall is 348.1 Hz.
<h3>
Frequency detected by the student</h3>
The observed frequency is determined by applying Doppler effect;
f' = f₀(v + v₀)/(v)
where;
- f' is the observed frequency
- v is speed of sound
- v₀ is the source speed
- f₀ is the original frequency
f' = 342(6 + 336)/(336)
f' = 348.1 Hz
Thus, the frequency the student detect from waves omitted from the fork and waves coming from the wall is 348.1 Hz.
Learn more about observed frequency here: brainly.com/question/10728818
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