Multiple Choice
The spaceship shown in the figure below is traveling at a speed of 15,000 km/s to the left while it sends out a signal with a wavelength of 4 meters. 
If astronomers living on planets A and B measure the radio waves coming from the space ship, what wavelengths will they measure?
A) Planet A measures 6 meters, and planet B measures 2 meters.
B) Planet A measures 2 meters, and planet B measures 6 meters.
C) Planet A measures 4.2 meters, and planet B measures 3.8 meters.
D) Planet A measures 3.8 meters, and Planet B measures 4.2 meters.
E) Both Planet A and Planet B measure 4 meters.
Correct Answer:
Verified
Correct Answer:
Verified
Q19: Which of these objects would emit an
Q70: A thin cloud of cool gas on
Q73: The period of a wave is inversely
Q74: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4371/.jpg" alt=" Figure
Q74: For a star that lies in the
Q77: Imagine you observed three different stars: a
Q79: How does the speed of light traveling
Q79: A light-year is a unit that is
Q80: Light with a wavelength of 600 nm
Q80: Imagine you see a streetlamp that is