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3 years ago

Why does a siren have a higher pitch as it approaches you?

Mathematics

2 answers:

Airida [17]3 years ago

7 0

Answer:

Apparent Increase in Wave Frequency

As the ambulance approaches you, the distance between the source of the waves and the observer decreases. Consequently, the siren sounds more shrill as the pitch of the wailing siren 'sounds' higher than its original value, as sound waves reach you 'more frequently'.

Step-by-step explanation

hope this helps

Ainat [17]3 years ago

6 0

Answer: C. The crests of the sound wave are spaced closer together.

Step-by-step explanation:I took the test.

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Janet bought4/5 of a pound of walnuts. Her family ate 1/3 of a pound. How much is left?

Serga [27]

this just wants us to calculate 4/5-1/3

make common denom

4/5 times 3/3=12/15

1/3 times 5/5=5/15

4/5-1/3=12/15-5/15=(12-5)/15=7/15

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IceJOKER [234]

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A rubber hose-insulator

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<u>Step-by-step explanation:</u>

Conductors are substances that allow the flow electricity through them whereas insulators do not permit the flow of electricity through them.

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3 years ago

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Leokris [45]

336

Step-by-step explanation:

2021-5=2016÷6=336

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2 years ago

X-1=-5-x if you know please

melisa1 [442]

Answer:

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Step-by-step explanation:

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2 years ago

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Mama L [17]

Answer: b

Step-by-step explanation:

I took the test and got it right

good luck!

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