Physics, 01.03.2021 14:00 PollyB1896

I have no idea what I'm doing and I really am desperate for help. What is the wavelength change of a radio signal, if the emitting source is moving away at 3,000 km/s? The lab (rest) wavelength of this radio signal is 1 meter.

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I have no idea what I'm doing and I really am desperate for help. What is the wavelength change of a radio signal, if the emitting source is moving away at 3,000 km/s? The lab (rest) wavelength of this radio signal is 1 meter​.​

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I have no idea what I'm doing and I really am desperate for help. What is the wavelength change of a radio signal, if the emitting source is moving away at 3,000 km/s? The lab (rest) wavelength of this radio signal is 1 meter.