Subject: How does light tell us the speed of a distant object? Note: use the Doppler Shift for the following question/answer:

1. The sound produced by a passenger plucking a guitar string in a helicopter that is at rest relative to you has a wavelength of 3.50 m and a frequency of 100 Hz. If the helicopter is moving towards you at a velocity of 200 m/s, the frequency you hear is ___ Hz even though the passenger is still producing the same 100 Hz sound.

Question

Subject: How does light tell us the speed of a distant object? Note: use the Doppler Shift for the following question/answer:

1. The sound produced by a passenger plucking a guitar string in a helicopter that is at rest relative to you has a wavelength of 3.50 m and a frequency of 100 Hz. If the helicopter is moving towards you at a velocity of 200 m/s, the frequency you hear is ___ Hz even though the passenger is still producing the same 100 Hz sound.

anonymous · Answer

$$FrequencyRecieved = \frac{ FrequencySent^{2} \times wavelength }{ FrequencySent \times wavelength + Velocity of Helicopter }$$

anonymous · Answer

I need it broken down with the answer because my math was not correct. I submitted it and it was incorrect. I know what the doppler shift formula is, but I flubbed the math part. Can anyone provide the answer?

anonymous · Answer

@JamesWolf  can you maybe plug in the numbers so I can see which one I input in the wrong place?