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According to the doppler effect, the sound of a police car siren (a. quieter b. louder) (a. higher b. lower) pitched as it approaches the observer.
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Name three different units of energy used to measure heat and describe what type of situations each is usually used.
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What is the increase in density of a medium due to wave travel?
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Which best describes what forms in nuclear fission? a. two smaller, more stable nucleib. two larger, less stable nucleic. one smaller, less stable nucleusd. one larger, more stable nucleus
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According to the doppler effect, the sound of a police car siren (a. quieter b. louder) (a. higher...
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