Wiki User
∙ 12y agoIf a source is moving toward you at a high rate of speed, you would perceive an increase in its frequency, resulting in a higher pitch (Doppler effect). This is commonly experienced with emergency vehicles approaching with sirens on.
As the source of sound moves toward you at a high rate of speed, the frequency of the sound waves will increase, resulting in a higher pitch. This is known as the Doppler effect.
When the pitch of the sound increases, it indicates that the source is moving towards you. Conversely, a decrease in pitch suggests that the source is moving away from you. This is due to the Doppler effect, where the frequency of the sound waves changes based on the motion of the source relative to the observer.
The phenomenon is called the Doppler effect. It describes the change in frequency of waves when the source of the waves is moving relative to the observer. In police radar, this effect is used to measure the speed of vehicles by detecting the frequency shift of the waves reflected off the moving vehicle.
False. The speed of sound in air is constant, around 343 meters per second. When the source of sound is moving, it can affect the frequency and intensity of the sound, but not the speed at which the sound travels.
No, the speed of sound is constant in a medium, so the speed of sound heard by an observer staying in one spot does not change if the source of the sound is moving. The frequency and wavelength of the sound may be affected by the motion of the source, but not the speed.
If the source of a sound is moving towards you, then the pitch of the soundyou hear is higher than the pitch of sound that the source is actually emitting.The rate of speed doesn't matter.BTW ... this also happens if you are moving toward the source.
As the source of sound moves toward you at a high rate of speed, the frequency of the sound waves will increase, resulting in a higher pitch. This is known as the Doppler effect.
When the pitch of the sound increases, it indicates that the source is moving towards you. Conversely, a decrease in pitch suggests that the source is moving away from you. This is due to the Doppler effect, where the frequency of the sound waves changes based on the motion of the source relative to the observer.
When the source of a sound is moving, the speed of sound waves emitted from the source is not affected by the motion of the source itself. However, the perceived frequency of the sound may change due to the Doppler effect, if the source is moving towards or away from the listener.
All of the frequencies emitted by the source would appear higher to me, all of the wavelengths would appear shorter, and anything that was visible to me would appear shifted toward the blue end of the spectrum, compared to what it was when it left the source. If, as you say, the source is approaching me at nearly the speed of light, then the 'shift' will be extreme. What left the source as radio waves might be visible to me, and what left the source as visible light might appear to me as hard X-rays or even gamma rays. By the way ... one thing that must be mentioned and appreciated is the fact that even if the source is approaching me at nearly the speed of light, if I measure the speed of the radiation from it as it sails past me, I'll see the radio, visible, X-ray, whatever ... moving past me at the speed of light ... 300,000 kilometers per second. Doesn't matter if the source is moving toward me, away from me, slow, fast, or sideways.
its speed increases
B. False
Assuming the source is moving in a straight line, there will always be a line between you and the source's path that meets the path at 90 degrees, unless you are directly in the path of the source or directly behind it. The important factor is the speed of the approach toward you, and then away from you.
The phenomenon is called the Doppler effect. It describes the change in frequency of waves when the source of the waves is moving relative to the observer. In police radar, this effect is used to measure the speed of vehicles by detecting the frequency shift of the waves reflected off the moving vehicle.
False. The speed of sound in air is constant, around 343 meters per second. When the source of sound is moving, it can affect the frequency and intensity of the sound, but not the speed at which the sound travels.
No, the speed of sound is constant in a medium, so the speed of sound heard by an observer staying in one spot does not change if the source of the sound is moving. The frequency and wavelength of the sound may be affected by the motion of the source, but not the speed.
No, if the speed of the observer (v0) is greater than the speed of the source (vs), the observer will hear a higher pitch as they move towards the source. However, if the speed of the source is greater than the speed of the observer, the observer will hear a lower pitch as they move towards the source.