Physics, 21.04.2020 19:57 angelalovelis
Consider a spring that does not obey Hooke's law very faithfully. One end of the spring is fixed. To keep the spring stretched or compressed an amount x, a force along the x-axis with x-component Fx=kx−bx2+cx3 must be applied to the free end. Here k=100N/m, b=700N/m2, and c=12,000N/m3. Note that x>0 when the spring is stretched and x<0 when it is compressed.(Many real springs behave in a similar fashion.)
(a) How much work must be done to stretch this spring by 0.050 m from its unstretched length?
(b) How much work must be done to compress this spring by 0.050 m from its unstretched length?
(c) How much work must be done to move the spring from being compressed by 0.070 m to being stretched by 0.030 m, assuming the end moves with constant speed during the motion?
Answers: 3
Physics, 21.06.2019 22:20, ayoismeisalex
1400 kg car has a speed of 27 m/s. if it takes 7 s to stop the car, what is the impulse and the average force acting on the car?
Answers: 1
Physics, 22.06.2019 05:50, Dweath50
Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.
Answers: 3
Physics, 22.06.2019 06:20, walmartislife
Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question
Answers: 1
Consider a spring that does not obey Hooke's law very faithfully. One end of the spring is fixed. To...
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