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What does a light source do?
It's simple the light bulb brings light when it is dark.it lights up the house how does it light up. it has a cord which electricity passes through and lights up the wire
Ninety percent of light incident on a certain piece of glass passes through it How much light passes through two pieces of this glass?
One pane of glass will allow 90 percent of light through. A second pane will allow 90 percent of that 90 percent, which is equal to 81 percent of the original light source.
Light beam dimmer is chemical or physical change?
A beam of light becoming dimmer is a physical change since it is reversible. Recharging its source will make the light beam bright again.
How did the discovery of fire as an energy source change the way human beings live?
About 3,000,000,000 changes in human beings live
How could you change the size of your shadow?
You can either move closer to the light source or move the light source closer to you. The size of your shadow just depends upon how much of the light you are obscuring so the more you block out, the bigger your shadow.
How does perceived pitch change as a sound passes a listener?
The perceived pitch of a sound can change as it passes a listener due to the Doppler effect. If the sound source is moving toward the listener, the pitch will be higher; if the source is moving away, the pitch will be lower. This is because of the compression or expansion of sound waves as the source moves relative to the listener.
How does a perceived pitch changed as a sound source passes a listener?
The perceived pitch of the sound drops (frequency decreases) as the source transitions from approaching the listener to receding from the listener. The phenomenon is called the "Doppler shift", after the German Physicist who explained it and worked out the math.
What Doppler effect is the the change in sound caused by the motion of the sound source motion of the listener or both?
Both. The Doppler effect occurs when there is relative motion between the sound source and the listener. If either the source or the listener is in motion, it will cause a shift in the frequency of the sound waves that are perceived.
How does Doppler effect on frequency and pitch?
The Doppler effect on frequency and pitch is the change in perceived frequency and pitch of a sound as the source moves relative to the listener. When the source is moving towards the listener, the perceived frequency and pitch increase, and when the source is moving away, they decrease. This effect is commonly experienced with moving vehicles and emergency sirens.
What is The Doppler effect is the change in sound caused by the motion of the sound source motion of the listener or both?
The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. It causes the perceived pitch of a sound to change based on the relative motion between the source of the sound waves and the listener.
What happens to the pitch as a sound source moves closer to listener?
As a sound source moves closer to a listener, the pitch of the sound will increase. This effect is known as the Doppler effect, where the perceived frequency of a sound wave increases as the source moves towards the listener.
As a sound source moves towards a listener the pitch does what?
As a sound source moves towards a listener, the pitch of the sound increases. This is because the sound waves become compressed and the frequency of the waves perceived by the listener is higher, leading to a higher pitch.
When a listener moves towards a stationary source of pitch of sound increase explain?
As a listener moves towards a stationary source of sound, the frequency of the sound waves received by the listener increases. This increase in frequency leads to a higher pitch perceived by the listener. This phenomenon is known as the Doppler effect.
When the source of a sound is moving its speed incress?
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.
What frequency will be detected by a stationary listener if source of sound is moving towards him?
The frequency detected by a stationary listener will be higher than the actual frequency emitted by the moving source. This effect is known as the Doppler effect, and it occurs because the sound waves are compressed as the source moves towards the listener, resulting in a perceived increase in frequency.
When both source and listener move in the same direction with a velocity equal to half the velocity of sound the change in frequency of the sound as detected by the listener is?
The frequency heard by the listener will increase as both the source and listener move towards each other. The change in frequency is given by the Doppler effect equation: f' = f * (v + v_L) / (v - v_S) where f' is the observed frequency, f is the actual frequency, v is the speed of sound, v_L is the speed of the listener, and v_S is the speed of the source.
In which case will the Doppler effect cause a listener to hear a higher frequency?
The Doppler effect will cause a listener to hear a higher frequency when the source of the sound is moving towards the listener. This causes the sound waves to be compressed, resulting in a higher perceived frequency.
