What is the work done by 20 Newton force applied at an angle of 45.0° to move a box a horizontal distance of 40 meters
2 answers:
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Answer:
The values is
Explanation:
From the question we are told that
The speed of the fire engine is
The frequency of the tone is
The speed of sound in air is
The beat frequency is mathematically represented as
Where is the frequency of sound heard by the people in the fire engine and is is mathematically evaluated as
substituting values
Thus