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As you drive down the road you see and heae an ambulance go by you in the opposite direction after it passes how is the frequency?
MichelleHahngp8572
Riding down the road and a ambulance passes you should be quit. This usually means someone got hurt.
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∙ 9y ago
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After an approaching ambulance passes a stationary observer what does the frequency of the sound of the siren heard by the observer appear to do?
Soften... It is lower due to the Doppler effect. Decrease =]
Which force pushes against a moving object as it passes through air?
When an object is moving in a particular direction, air resistance will be acting on the object in the opposite direction to the direction of travel.
When a wave passes from a less dense medium to a more dense medium what might change?
Velocity (speed and direction) Wavelength (frequency)
If two wires run parallel and the current passes through both wires in the same direction?
they attract if they go opposite directions they repel
Will stars moving away from earth have a greater frequency?
They should seem to have a lower frequency due to the Doppler effect. The same as when an ambulance passes, the siren seems to go down in pitch because the source is moving away from you, so the time it takes each pulse of the siren to reach you is perceived to be longer.
What is the number of waves that passes a point per second called?
Frequency
What is the name of the effect the causes the pitch of an ambulance siren to change as it passes you?
The Doppler effect
If an emergency vehicle passes you in traffic just as it passes you the pitch of the siren changes. This is because?
frequency.
If an emergency vehicle passes you in traffic just as it passes you the pitch of the siren changes This is because?
frequency.
Occurs when a sound passes an observer?
That would be the Doppler shift of the sounds frequency as it approaches you and passes by.
You are in a car going 70 kmh and another car passes you going in the opposite direction at 70 kmh. do both cars have the same velocity?
No. Velocity is a vector, so it has both a magnitude and a direction. If the velocity of your car was heading in the positive direction, then the other car is moving in the negative direction. The velocities are NOT the same!
How are frequency and hertz different?
Frequency is the amount of times a wave passes through an area. Hertz is a measurement.
