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svp [43]
3 years ago
15

Jane and John Doppler effect

Physics
1 answer:
UkoKoshka [18]3 years ago
4 0

Answer:

To summarize, <em><u>Jane's star</u></em> has a <em><u>red</u></em> light and <em><u>is traveling towards</u></em> the <em><u>Earth</u></em> while <em><u>John's star </u></em>has a <em><u>blue</u></em> light and <em><u>is traveling away</u></em> from the <em><u>Earth</u></em>. This is a <em><u>prime example</u></em> of the <em><u>Doppler Effect</u></em> in <em><u>motion</u></em>. The stars <em><u>look different </u></em>because <em><u>they are traveling in different directions.</u></em>

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See the explanation below

Explanation:

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if effect of wind is in opposite direction then it travels 6 km in 20 min

so the average speed is given by the ratio of total distance and total time

v_{avg} = \frac{6000}{20*60}

v_{avg} = 5m/s

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V_{net} = v_{bird} - v_{wind}

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Part b)

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v_{net}= v_{bird} + v_{wind}

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now we can find the time to go back

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time = \frac{6000}{13}

time = 7.7 minutes

Part c)

Total time of round trip when wind is present

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T = 22.22 min

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