Oscillatory Motion 4.1 The Important Stuﬀ 4.1.1 Simple Harmonic Motion In this chapter we consider systems which have a motion which repeats itself in time, that is, it is periodic. In particular we look at systems which have some coordinate (say, x) which has a sinusoidal dependence on time. A graph of x vs. t for this kind of motion is shown in
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Hot liquids (including melted rock) are less dense than cold and will rise. This motion is convection currents and is what causes the plates to move that are riding on the surface of all of this. The Earth’s crust is composed of continental plates that are in constant motion because of the convection currents in the Earth’s mantle and outer ...
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4 Linear Motion think! A hungry mosquito sees you resting in a hammock in a 3-meters-per-second breeze. How fast and in what direction should the mosquito fly in order to hover above you for lunch? Answer: The mosquito should fly toward you into the breeze. When above you it should fly at 3 meters per second in order to hover at rest above you.
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Chapter 2 Review Answer Key Select the correct term to complete the sentences. Section 2.1 1. force 2. Newton’s first law 3. inertia 4. net force 5. newton Section 2.2 6. acceleration 7. Newton’s second law Section 2.3 8. free fall 9. acceleration due to gravity 10. velocity 11. weight 12. terminal speed Section 2.4 13. slope Reviewing ...
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The force required to keep the object moving with the same velocity is (a) 32 N (b) 0 N (c) 2 N (d) 8 N. Soln: Answer is (b) 0 N . Explanation: Here the friction is opposing the force hence no force is required to keep the object in uniform motion. Hence, the answer is 0 N. 7. Rocket works on the principle of conservation of (a) mass (b) energy ...
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