At launch a rocket ship weighs 4.5 million pounds. when it is launched from rest, it takes 8.00 s to reach 161 km> h; at the end of the first 1.00 min, its speed is 1610 km> h. (a) what is the average acceleration (in m> s2) of the rocket (i) during the first 8.00 s and (ii) between 8.00 s and the end of the first 1.00 min? (b) assuming the acceleration is constant during each time interval (but not necessarily the same in both intervals), what distance does the rocket travel (i) during the first 8.00 s and (ii) during the interval from 8.00 s to 1.00 min?
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Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.
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Physics, 22.06.2019 13:00
Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?
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The energy released by a nuclear fusion reaction is produced when
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Select the correct answer. what does the process of natural selection involve?
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At launch a rocket ship weighs 4.5 million pounds. when it is launched from rest, it takes 8.00 s to...
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