3 The extension, y, of a material with an applied force, F, isgiven by y = efx1x10-3a) Calculate the work done if the force increases from100N to 500N using:i) An analytical integration techniqueii) A numerical integration technique[Note: the work done is given by the area under the curve]b) Compare the two answersc) Úsing a computer spreadsheet increase the number ofvalues used for your numerical methodd) Analyse any effect the size of numerical step has onthe result.

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Q1 An object with a mass 100 kg decrease in kinetic energy of 500 ki and an increase in potential energy of 1500 kJ. The initial velocity and elevation of the object, each relative to the surface of the earth, are 40 m/s and 30 m, respectively. Determine (a) the final velocity, in m/s. (b) the final elevation, in m
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5 of 18 A 4500 kg spacecraft is in a circular orbit 1500 km above the I Review I Constants surface of Mars (mM = 6.42 x 1023 kg, RM = 3.39 x 10 m). Part A How much work must the spacecraft engines perform to move the spacecraft to a circular orbit that is 4500 km above the surface? Express your answer with the appropriate units. HẢ ? w - 1.49 • 1010 J %3D Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback Next > MacBook Air esc 80 DII DD F1 F2 F3 F4 FS F6 F7 FB F9 F10 F11 F12 @ # $ & * 1 2 3 4 7 9. delete Q W E R T Y 一 P
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3) The meaning of the word "WORK" is quite different in physics from its everyday usage. Give an example of an action a person could do that "feels like work" but that does not involve any work as we've defined in this chapter. Support your reasoning with equations/data.
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Part A Find the component of force along the line connecting the two atoms, F;(r), on one atom as a function of r. The potential energy of two atoms in a diatomic molecule is approximated by U (r) = a/r12 –b/r°, where r is the spacing between atoms and a and b are positive Express your answer in terms of the variables a, b, and r. constants, F,(r) = Submit Request Answer Part B Find the equilibrium distance between the two atoms. Express your answer in terms of the variables a and b. Eνα ΑΣφ ? Tmin = Submit Request Answer Part C Is this equilibrium stable? O yes O no Submit Request Answer
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Part A A typical muscle fiber is 2.0 cm long and has a cross-section area of 3.1 x 10- m2. VWhen the muscle fiber is stimulated, it pulls with a force of 1.1 mN. What is the work done by the muscle fiber as it contracts to a length of 1.5 cm? Express your answer with the appropriate units. W = Value J Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Provide Feedback