A magnetic needle with magnetic moment μ = 0.015 Am² is placed in a uniform magnetic field B = 0.45 T as shown in the figure. The angle between the direction of the magnetic moment and the direction of the magnetic field is 0 = 95⁰. Randomized Variables μ=0.015 Am² B=0.45 T 0 = 95° Express the potential energy U in terms of μ, B, 0. Calculate the numerical value of U in J. B If can be changed, which value has the minimum potential energy? Give your answer in degrees. If can be changed, which value has the maximum potential energy? Give your answer in degrees. Ignore the mass of the needle, express the work needed to change the angle from 0 to a in terms of μ, B, 0, a. If a = 155°, calculate the numerical value of the work in J. 15
A magnetic needle with magnetic moment μ = 0.015 Am² is placed in a uniform magnetic field B = 0.45 T as shown in the figure. The angle between the direction of the magnetic moment and the direction of the magnetic field is 0 = 95⁰. Randomized Variables μ=0.015 Am² B=0.45 T 0 = 95° Express the potential energy U in terms of μ, B, 0. Calculate the numerical value of U in J. B If can be changed, which value has the minimum potential energy? Give your answer in degrees. If can be changed, which value has the maximum potential energy? Give your answer in degrees. Ignore the mass of the needle, express the work needed to change the angle from 0 to a in terms of μ, B, 0, a. If a = 155°, calculate the numerical value of the work in J. 15
Chapter11: Magnetic Forces And Fields
Section: Chapter Questions
Problem 72AP: A particle moving downward at a speed of 6.0106 m/s enters a uniform magnetic field that is...
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Step 1: Determine the Given variable
VIEWStep 2: calculation expression of magnatic potential energy and numerical value of U
VIEWStep 3: calculation of angle when potential energy is minimum
VIEWStep 4: calculation angle when potential energy maximum ,work expression and work numerical value
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