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How do scientists use the Doppler effect to measure the actual motion of stars?
The Doppler effect can be used with a radar gun. Police can use this device to detect drivers who are traveling above the speed limit. The radar gun emits a radio signal with a known wavelength. A moving car generates a returning wave whose wavelength is picked us be the radar gun. The size of the difference in the two wavelengths shows how fast the moving vehicle is traveling.
Speed of light in car then turned on the headlight?
The speed of light is constant in a vacuum at approximately 299,792 kilometers per second. When a car turns on its headlights, the light produced also travels at this speed, regardless of the car's own velocity.
How will the total distance traveled by a car in 2 hours be affected if the average speed is doubled?
If the average speed of the car is doubled, the total distance traveled in 2 hours will also be doubled. This is because distance is directly proportional to speed when time is constant. So, if the speed is doubled, the car will cover twice the distance in the same amount of time.
Would police place a gps tracking device on a car If your car was siezed after driving while disqualified would the police put a GPS tracking device on it Should I sell my car?
It is possible for police to place a GPS tracking device on a car if it is seized as part of an investigation. The decision to sell your car ultimately depends on your personal circumstances and legal advice. If you have concerns about potential tracking, you may consider discussing this with a legal professional.
With what instrument do they measure a car or and elephant?
For weight - scales, for length or height, tape measures.
What do police use to see the speed of a car?
radar waves.
How accurate is a police radar gun when the car is going down hill?
Very accurate, it measures speed and doesn't care if the vehicle is traveling up or down, toward or away from the radar gun.
What are the benefits of having a radar detector?
Having a radar detector will alert you when a Police Car with its speed radar is near. The Radar Detectors will produce an audible signal alerting you of this, and will do so far in advance of when you are able to see the Police Car.
How the Doppler effect is used by the police to measure the speed of a car.?
Police use radar technology to measure the speed of a car by sending out a radio wave towards the vehicle. The radio wave bounces off the car and returns to the radar unit. The Doppler effect causes a shift in the frequency of the returning wave, allowing the radar unit to calculate the speed of the car based on this frequency shift.
How radiation helps the police?
um radar guns emit radiation ........they use the radar guns to find the speed of a speeding car.
How might radiation help the police?
um radar guns emit radiation ........they use the radar guns to find the speed of a speeding car.
Can a Police Officer use a Radar Gun to clock speed of a car while the Police Officer is driving?
Of course they can all they have to do is hold the radar gun with one hand and the wheel with the other
What are speed guns?
A speed gun is a handheld Radar or Laser unit used by traffic police to check how fast a car is going.
Can radar work when police in motion?
No. With police officers in motion, it would appear that cars would be going slower. Say that a car is going 50 MPH, and you are going 45 MPH. Eventually the vehicle wil be ahead of you. Now say you are a police officer with radar. If you test this car, it will appear (on radar) that the 50 MPH car is only going 5 MPH, thus to get the accurate speed, you must be going 0 MPH.Disagree. The original police radar required a stationary unit. Radar is use for the past 30 years is capabable of adding or deducting the speed of the police car from the observed speed. It does not require that the police car be in one fixed spot.Added: The second cotributor is correct. I seriously doubt that any of the old radar units are still in operation much less certifiable as accurate. ALSO: the term "radar" is a commonly used by the the public to describe ALL police speed-clocking devices. Any of these can be calibrated to be used while the vehicles are in motion.
Is police radar accurate when he is traveling toward you?
Yes. The radar calculating unit is reading more than one speed. It reads the patrol car speed from stationary objects (the ground, signs, etc.) and subtracts that speed from the speed at which your car and his car are coming together. If the patrol car is doing 38 and you are doing 55, the radar unit will read 38 from the ground and 93 from your car. It subtracts the 38 from the 93 and displays your speed as 55.
If a police car is moving in the opposite direction of your car can he get an accurate speed of your car?
oh yes, the radar guns are attached to the cars internal computers, so it compensates for the forward speed.
Can a Police Officer use Radar to clock the speed of a car while the Police Officer is driving?
The answer is "yes." Traffic radar monitors both the speed of the vehicle in which is it mounted and the speed of "target" vehicles coming toward or moving away from it. On the radar display, the officer sees two speeds: "patrol" (the speed of his vehicle) and "target" (the speed of the vehicle the radar is tracking). the target speed measurement is equally accurate, whether the patrol vehicle is moving or not.
