Question

You are in a car driving away from a stationary whistle. How does the sound you hear compare with that of the whistle itself?
You hear a lower pitch than the whistle makes.

You hear the same pitch that the whistle makes.

You hear a higher pitch than the whistle makes.

Your motion is irrelevant to what you hear

I think its a lower pitch?

Answer 1

@roadjester

Answer 2

@biire2u

Answer 3

@LastDayWork

Answer 4

Do you know Doppler's effect ?

Answer 5

oh yes i've read of it in a previous lesson to this

Answer 6

so its not lower pitch?

Answer 7

See the formula and tell me the answer
http://en.wikipedia.org/wiki/Doppler_effect#General

Answer 8

sorry page isn't loading :/

Answer 9

It's the mathematical formula for Doppler's Effect. Have you studied any such formula ?

Answer 10

no they just gave me like the definition that frequency increases when source and observer approach and decrease as they go apart it says for this question i just need that

Answer 11

In that case,
You hear a lower pitch than the whistle makes.
:)

Answer 12

great :) oh and one last one before i go to sleep : Which characteristic of a sound wave corresponds to the loudness?

frequency

wavelength

phase

amplitude

Answer 13

What's your guess ??

Answer 14

frequency

Answer 15

It should be Amplitude..

Answer 16

ohh right! yep sorry getting too sleepy lol thank you for your help!!

Answer 17

You're welcome :)