Explain how the Zeeman effect allows us to study stellar magnetic fields
What will be an ideal response?
The Zeeman effect causes spectral lines to appear split into two. This tells us magnetic fields are present. The greater the observed splitting, the stronger the magnetic fields are.
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By examining the following three images, what can you conclude?
a. Venus is covered with clouds. b. Earth has a large amount of liquid water. c. Some form of ice does exist on Mars, but it does not have large amounts of liquid water. d. The planets in order from the least to most dense atmospheres are Venus, Earth, and Mars. e. all of the above
Which plate boundary has the lowest earthquake frequency?
Earthquakes generate ________ that scientists can use to deduce the internal structure of Earth.
A. weather patterns B. magnetic fields C. electromagnetic waves D. seismic waves E. lava flows
A spaceship approaches Earth with a speed 0.38c. A passenger in the spaceship measures his heartbeat as 72 beats per minute
How many beats per minute are observed in the telemetry radio signals received on Earth? Note that, in addition to time dilation, one must take into account that the signals of successive heartbeats have to travel shorter distances because the spaceship is moving closer (Doppler Effect). A) 75 B) 107 C) 48 D) 100 E) 67