Physics, 19.11.2019 05:31, zulaykaalex
Aparticle is acted on by two torques about the origin: τ→1 has a magnitude of 8 n·m and is directed in the positive direction of the x axis, and τ→2 has a magnitude of 8.9 n·m and is directed in the negative direction of the y axis. in unit-vector notation, find dℓ→/dt, where ℓ→ is the angular momentum of the particle about the origin.
Answers: 1
Physics, 22.06.2019 04:30, leilaford2003
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
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
Physics, 23.06.2019 01:30, ana2896
Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.
Answers: 1
Physics, 23.06.2019 03:40, hernsl0263
Anumber of conditions are required for a population to be in hardy-weinberg equilibrium. which of the following are correct descriptions of the conditions that must be met? check all that apply. a. no mutations b. random mating c. small population d. migration or gene flow e. occurrence of mutations f. no natural selection
Answers: 1
Aparticle is acted on by two torques about the origin: τ→1 has a magnitude of 8 n·m and is directed...
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