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A car approaches a police radar gun. how does the wavelength of the signal detected within the car compare with that emitted by the radar gun? the wavelength detected inside the car is longer. the wavelength detected inside the car might be shorter or longer depending on speed range. the wavelength detected inside the car is the same. the wavelength detected inside the car is shorter.

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A car approaches a police radar gun. The wavelength detected inside the car is shorter compared with that emitted by the radar gun. If travelling at a changeable speed towards the gun, the wavelength detected inside the car might be shorter or longer depending on actual speed at any moment.

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