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Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?
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An isotope undergoes radioactive decay by emitting radiation that has a β1 charge. what other characteristic does the radiation have?
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Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?
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