Physics, 10.07.2019 10:00 EricaLSH7624
Aplane drops a rubber raft to the survivors of a shipwreck. the plane is flying at a height of 1960 m and with a speed of 109 m/s. the raft lands next to the survivors. ignoring air resistance, how far away from the shipwreck was the plane when the raft was dropped? (g = 9.8 m/s2) (round your answer to a whole number).
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Which of these has some mechanical energy? a. an atom b. heat inside earth c. a book on a shelf d. the fire from a lit match
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What would be the radius of the earth if it had its actual mass but had the density of nuclei? express your answer to two significant figures and include the appropriate units.
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Arope has one end tied to a vertical support. you hold the other end so that the rope is horizontal. if you move the end of the rope back and forth with a frequency of 4 hz, the transverse wave you produce has a wavelength of 0.5 m. what is the speed of the wave in the rope?
Answers: 1
Aplane drops a rubber raft to the survivors of a shipwreck. the plane is flying at a height of 1960...
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