Unit 3 HW 2 (Complete)

.docx

School

Sam Houston State University *

*We aren’t endorsed by this school

Course

1403

Subject

Astronomy

Date

Dec 6, 2023

Type

docx

Pages

5

Uploaded by DeaconWolverine3688

Report
PHYS 1403 C. R. James UNIT 3 HW #2 Description: The figure below shows a train traveling toward the right and sounding its horn. Three persons are shown at locations A, B, and C. Assume that all three people can hear the train blowing its horn. 1. Ranking Instructions: Rank the pitch of the horn from highest pitch (or frequency) to lowest pitch (or frequency) as heard by each person (A – C) Ranking Order: Highest C A B Lowest Or, the pitch heard by each person would be the same. (indicate with check mark). Carefully explain your reasoning for ranking this way: Looking at this chart, you can see the sound barriers represented by the dotted lines. Person A would be the first to hear the sound. The next person to hear the sound be Person C, due to the train moving towards Person C, the sound would carry over. Finally, Person B would be the last to hear it. 2. Ranking Instructions: Rank the wavelength (from longest to shortest) of the sound of the horn as heard by each person (A – C). Ranking Order: Longest B A C Shortest Or, the wavelength heard is the same for each person. (indicate with check mark). Carefully explain your reasoning for ranking this way: I chose this ra nking because the pitch would get higher due to the higher frequency
waves. Description: The figure below shows the motion of five distant stars (A - E) relative to a stationary observer (telescope). The speed and direction of each star is indicated by the length and direction of the arrows shown. C E A D Observer Distant Stars Ranking Instructions: Rank the Doppler shift of the light observed from each star (A – E) from greatest “blueshift”, through no shift, to greatest “redshift”. 3. Ranking Order: Greatest blueshift E , D , B C A Greatest redshift Or, the Doppler shift for each star is the same. (indicate with check mark). Carefully explain your reasoning for ranking this way: I chose this option because when a star moves to you, you can see the wavelengths that it gives off. So when a star moves towards you, it’s a blueshift. The only stars that is facing you (the observer) is Stars E and D. If it moves away, it becomes a red shift, so Stars B, C, and A are more red. B
4. COMPLETE p 86, questions 4-5 of Lecture Tutorials (Doppler Shift exercise) and insert answers/images below: 4. a. I think Star A would be a blueshift. b. Star B would be a redshift. c. Star C would not have a shift at all. 5. I agree with Student 2. The spectra of the stars will tell you if the star is moving away or towards you. 5. COMPLETE p 87, questions 6-7 of Lecture Tutorials (Doppler Shift exercise) and insert answers/images below: 6. Spectra C is moving towards you. Despite Spectra A being similar, Spectra C is more closer to the blue end of the spectrum compared to Spectra A. 7. Spectra B is moving away. I chose this because it’s spectra is in the red more than
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help