Physics
03.06.2020 08:54
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IF YOU GET GOOD GRADES ON TEST PLEASE HELP sarah hears the siren of an ambulance
IF YOU GET GOOD GRADES ON TEST PLEASE HELP
sarah hears the siren of an ambulance that is moving toward her. if the actual frequency of the siren is 2000 hertz; which frequency was heard by sarah?
A. 1900
B. 2000
C 1000
D. 2100
( please be 100% sure with your answer )
Show Answers
A. 1900
B. 2000
C 1000
D. 2100
( please be 100% sure with your answer )
dmahaney8538
4,9(24 marks)
A. 1900
Explanation:
Because if the ambulance is still approaching her, it means that she has not yet heard the full frequency of the ambulance. And it wouldn't be 1000 because otherwise she wouldn't be hearing the siren.
bankroll42
4,8(100 marks)
A. 1900 hertz everything else it either to big or to little
lolagrace06
4,7(94 marks)
it effects it because if you have more string it will catch more air therefore it will go faster and swing more times
explanation:
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