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A train passes by blowing its whistle As it passes the sound of the whistle is lower than it was on its way towards you This is due to?
Gatorrificperson
a change in the sound's frequency caused by the motion of the sound's source
Wiki User
∙ 14y ago
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Do you have to close basement windows if AC is not blowing into them?
Yes. Since cool air tends to concentrate at lower elevations, leaving basement windows open will result in considerable wasted electricity. While the AC may not be blowing into them, warmer air from outside will convect into the basement, mixing with the colder air and pushing colder air out.
Why is diesel is not used in petrol engines?
Because diesel is ignited of heat and high high compresion not a spark on lower compresion petrol engine. If you use diesel in a petrol you will end up with your engine knocking and pre-detonation followed by your engine blowing up pretty bad.
Why Fuel consumption varying when the generator load varies?
with decrease in fuel consumption the amount of steam produced is also reduced.Hence when lower quantity of steam passes through the turbine the torque generated is less and since generator and turbine are coupled on a single shaft the generator torque also decrease which reduces load.
What is the anode and cathode of a lead storage battery?
Anode : The end which is at a lower negative potentialCathode: The end which is at a higher negative potentialAnswerThe cathode is the terminal towards which free electrons drift in a cell's external circuit. In other words, when the cell is discharging, it is the positive electrode.
What is meant by low pass fliter?
An electronic circuit that passes low frequency signals and blocks the middle and higher frequencies. Used often in speakers systems to direct power to the 'woofers' and to protect the mid range and tweeters for heavy base power Can also be used in many other audio, control and RF circuits, but principle is still the same - pass the lower frequencies and block or attenuate the higher ones.
What happens to sound of a train whistle as a train approaches and passes you?
This is known as the Doppler effect. As the train approaches you, the wavelength of the sound waves it emits are compressed, and therefore the whistle sounds higher. When the train is moving away, the wavelengths are extended, causing the whistle to sound lower. If the train were not moving at all, the pitch you would hear from the whistle would be somewhere between the high and low pitches you hear when the train is moving.
What happens to the sound of a train whistle as a train approaches and passes you?
This is known as the Doppler effect. As the train approaches you, the wavelength of the sound waves it emits are compressed, and therefore the whistle sounds higher. When the train is moving away, the wavelengths are extended, causing the whistle to sound lower. If the train were not moving at all, the pitch you would hear from the whistle would be somewhere between the high and low pitches you hear when the train is moving.
What happens to the sound of a train whistle as the train approaches and then passes?
This is known as the Doppler effect. As the train approaches you, the wavelength of the sound waves it emits are compressed, and therefore the whistle sounds higher. When the train is moving away, the wavelengths are extended, causing the whistle to sound lower. If the train were not moving at all, the pitch you would hear from the whistle would be somewhere between the high and low pitches you hear when the train is moving.Read more: http://wiki.answers.com/Why_is_the_pitch_of_a_train's_whistle_higher_as_the_train_approaches_and_loweras_it_moves_away#ixzz1DToTuS3j
How does a slide whistle work?
A slide whistle is musical wind instrument containing either a metal or plastic reed inside with a plug at the end. As the reed moves up, along with someone blowing into it, the higher the note will be. If it moves down the lower the note will be this is because of the compression of the plug causing low space to create higher frequencies and more space to create low frequencies.
What is the Doppler effect and is it useful?
It is the effect that happens when waves like sound are moving in relation to another object. In the classic train whistle example, The whistle suddenly drops in pitch as it passes you and starts to move away from you. This is because the sound waves now are stretched out, giving them a lower pitch. It is useful. Doppler radar used in weather forecasting is one example.
What is the difference between a flute and a whistle?
A whistle is held lengthwise in front of you face, and has a high sharp sound. A flute is held horizontally to the right, and can play lower notes.
How do you do a mocking jay whistle?
There are 4 notes to it. It goes high,higher,lower, very low
Hot air blowing on floor when driving at a fast speed?
It's most likely air entering the air system and becoming really hot as it passes the now hotter than usual engine and the air continues the the lower pressured cabin and onto your sweaty legs
What if there are no passes at the snow forts on clubpenguin?
then go to a lower amount server
What is the sound of whistle called?
yes, a whistle sound is high pitched sound
When light passes from a medium with a high index of refraction into a medium with a lower index of refraction which direction does the light bend?
A medium with a higher index of refraction, like diamond, is more dense than the medium with a lower index of refraction, like air. If the ray of light is moving from the less dense medium (lower index of refraction), to a more dense (higher index of refraction) the ray of light bends TOWARDS the normal.
Who has the whistle in harvest moon animal parade?
Originally, the whistle belongs to Dale, but he seems to have dropped it. He probably have dropped it at Barbara's shop, but then she tells you to talk to Julius. Julius says he got the whistle from Simon and then gave it to Chloe. Then, go to Ramsey and he says to go talk to Owen who is with Chloe. In the end, it seems that Owen have the whistle and he gives it to you. He is on the 10th floor of the Garmon Lower Mines.
