Physics, 08.07.2019 07:40 valeriekbueno
You are an employee of the city of chicago. a city official declares that all cables holding traffic lights in the city should be exactly horizontal and asks you to direct the project. what should be your reply? a. that's impossible, because according to newton's second law, there must be an upward component of the tension in the cable that balances the weight of the traffic light, and therefore, the cable can never be exactly horizontal. b. no problem. all we have to do is increase the horizontal tension in the cable. c. no problem. all it takes is a pay raise. d. that's impossible, because by newton's third law, the cable pulls horizontally on the poles with a force of the same magnitude force as the force with which the poles pull on the cable. therefore, if the horizontal component of the tension is too large, it will pull the poles inward toward the cables.
Answers: 1
Physics, 22.06.2019 12:00
Explain what happens at the saturation point when adding salt to water at room temperature.
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Physics, 22.06.2019 19:30
Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
Answers: 1
Physics, 22.06.2019 21:30
Global climatic patterns are changing because of the melting of polar ice caps. the melting of polar ice caps is an example of the interaction between the atmosphere and cryosphere cryosphere and geosphere hydrosphere and geosphere biosphere and cryosphere
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You are an employee of the city of chicago. a city official declares that all cables holding traffic...
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