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A 2.0-kg object is attached to one end of a horizontal spring that has a negligible mass and a spring constant of 250 N/m. The other end of the spring is fixed to a wall. The spring is compressed by 15 cm from its equilibrium position and released from rest.
1. What is the speed when the object is 7.5 cm from equilibrium?
2. What is the speed when the object is at the equilibrium position?
3. What is the speed of the object when it is 13.0 cm from equilibrium?
An electron is moving through a magnetic field whose magnitude is 8.76 x 10-4 T. The electron experiences only a magnetic force and has an acceleration of magnitude 3.32 x 1014 m/s2.
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A ladybug starts at the center of a 16.0 {\rm in}.-diameter turntable and crawls in a straight radial line to the edge. While this is happening, the turntable turns during a 45.0^\circ angle. Discover the magnitude and direction of the ladybug's disp..
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