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An object moving away from the observer will exhibit a(n) _______________ shift due to the Doppler effect.
Indispensable
Absolutely necessary or essential for something to function properly or to achieve a particular goal.
Publicity
The exposure or attention that a product, person, or organization receives through media channels, usually without direct payment.
Travel Guides
Publications or online resources that provide information and tips to travelers about destinations, accommodations, attractions, and itineraries.
Direct Marketing
A form of advertising where companies communicate directly with the consumer through mail, email, texts, and other marketing materials without the use of intermediaries.
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