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asteringPhysics: HW29 Google Chrome Secure https://session.masteringphysics.com/

ID: 1784416 • Letter: A

Question

asteringPhysics: HW29 Google Chrome Secure https://session.masteringphysics.com/myct/itemView?assignmentProblemID-83334672 HW29 Problem 29.36 a previous | 8 of 16 | next Part A Problem 29.36 What is the magnitude of the force on the first wire? Express your answer with the appropriate units. Assume that in (Figure 1)I 10 A and d 56 cm alue Units Submit My Answers Give Up Figure 1 Part B What is the direction of the force on the first wirc? Into page 2.0 cm Out of page 2.0 cm Down Up Submit My Answers Give Up Part C What is the magnitude of the force on the second wire? 6.38 PM Type here to search 10/21/20177

Explanation / Answer

magnetic force exerted by 2 on 1 = F21 = uo*I1*I2*d/(2*pi*r12)


F21 = 4*pi*10^-7*10*10*0.56/(2*pi*0.02)   up


F21y = 0.00056 N


magnetic force exerted by 3 on 1 = F31 = -uo*I1*I3*d/(2*pi*r13)


F31 = -4*pi*10^-7*10*10*0.56/(2*pi*0.04)   down


F31y = -0.00028 N    down


Fon1 = F21 + F31

Fon1 = 0.00028 N

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direction = up


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magnetic force exerted by 1 on 2 = F12 = uo*I1*I2/(2*pi*r12)


F21 = -4*pi*10^-7*10*10/(2*pi*0.02)   down


F21y = -0.001 N


magnetic force exerted by 3 on 2 = F32 = -uo*I2*I3/(2*pi*r23)


F32 = 4*pi*10^-7*10*10/(2*pi*0.04)   up


F32y = -0.001 N    up

Fon2 = F32 + F32 = 0