How fast is the star moving? (Doppler effect)

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AI Thread Summary
The discussion focuses on calculating the speed of a star based on the observed change in light frequency due to the Doppler effect. A star that typically emits light at 6.00 × 10^14 Hz appears to emit at 6.01 × 10^14 Hz, indicating a shift. Participants emphasize the importance of showing work and using proper formatting for clarity. The direction of the star's motion, whether towards or away from Earth, is also a critical point of discussion. Overall, the thread highlights the need for a thorough approach to solving the problem while adhering to forum guidelines.
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Homework Statement
how fast is the star moving problem doppler effect
Relevant Equations
z= λ observed - λ emitted/ λ observed
A type of star that usually emits light at a frequency of 6.00 × 10^14 Hz appears to emit light at a frequency of 6.01 × 10^14 Hz.
Calculate how fast the star is moving, and if it moving towards us or away from us.
 
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Welcome to PhysicsForums. :smile:

Per the PF rules, you need to show your best efforts to start working the problem before we can offer tutorial help.
 
yeah sure
 

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Please post a better image of your work (not sideways, good contrast and legible), or better yet please type your work into the forum. See the LaTeX Guide link in the lower left of the Edit window to learn how to post math equations here. Thanks.
 
HalJordan2814 said:
yeah sure
The answer looks correct, although you don't say what's the direction of motion.
 
HalJordan2814 said:
Homework Statement:: how fast is the star moving problem doppler effect
Relevant Equations:: z= λ observed - λ emitted/ λ observed

A type of star that usually emits light at a frequency of 6.00 × 10^14 Hz appears to emit light at a frequency of 6.01 × 10^14 Hz.
Calculate how fast the star is moving, and if it moving towards us or away from us.
Did you consider doing a bit of algebra to get ##z## in terms of frequencies before you plugged the numbers in?
 

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