Physics, 08.04.2020 02:51 fatback7063
1. Her angular speed increases because by pulling in her arms she creates a net torque in the direction of rotation. 2. Her angular speed increases because air friction is reduced as her arms come in. 3. Her angular speed increases because her angular momentum is the same but her moment of inertia decreases. 4. Her angular speed increases because her potential energy increases as her arms come in. 5. Her angular speed increases due to a net torque exerted by her surroundings. 6. Her angular speed increases because her angular momentum increases.
Answers: 2
Physics, 21.06.2019 23:20, funnynunny2903
Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity
Answers: 2
Physics, 22.06.2019 17:40, yoongnzl
Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.
Answers: 1
Physics, 22.06.2019 19:30, diyagawande
Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.
Answers: 1
1. Her angular speed increases because by pulling in her arms she creates a net torque in the direct...
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