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iPad 8:05 PM session.masteringphysics.com c + 8:4 Microsoft. Course Ho... Course Ho...Masteri. 10.0 Kg Mi. 4:19 PM)4:19 PM HW1018Problem 7.79 Problem 7.79 Asingloconservative forceF(z) acts on a smal sphere of mass m while the sphere moves along the z-ass You release the sphere from rest at z.-150m As the sphere moves, you measure its velocity as a function of position. You use the velocity data to calculate the kinesic energy K:shows your data 040 200-150-1.00-050 000 030 100 150 200 Part A Let U(z) be the potential-energy function for FYa). ts U(z) symmetric about z-0 so, then U(z) = U(-z) yes MyAnsert Give Up Correct U+K=E=constant.ho por ts have the same knetic energy, they must havete same potental energy since the sum of U and K constant. Since the kinetic energy curve symmetric, the potenial energy curve must also be symmetric Part B you set U-0atr 0, what is the value of U at z150 m? Express your answer to two significant figures and include the appropriate units UValue Units My Answers Give Up Part C Select the correct graph of U(C) 1 0.5o0.5 0.05Explanation / Answer
1> potential energy is always depends upon the reference.So if we shift the reference ponit 0.15 J downward then potentoal energy at x=0 become zero and at x=-1.5 m will shift from 0J to -0.15 J
For question 7.35 part D
You must find the potential energy is negative, Now when the molecules are apart by infinite distance the potential energy is zero. so we must supply external energy equal to the minimum potential energy to separate the molecules infinite distance apart
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