36% D Mon 4:03 PM Q S · Chrome File Edit View History Bookmarks People Window He

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36% D Mon 4:03 PM Q S · Chrome File Edit View History Bookmarks People Window Help MasteringPhysics: CH 29 HW Secure https://session.masteringphysics.com/myct/itemView?assignmentProblemID=93772235&offset;=next You may want to review (Pages 821 - 822). Part A What magnetic field strength will levitate the 2.0 g wire in the figure(Figure 1)? Assume that I = 1.6 A and d = 12 cm. Express your answer to two significant figures and include the appropriate units. LT LÀ + c ) ( ? Figure B= Value Units Submit Request Answer 2.0 g wire Part B B-field region What is the direction of the magnetic field? O Upward O Downward O Into the screen O Out of the screen Processing request... 99000 1 1 O 7 w xj 61 MA OD

Explanation / Answer

Using Force balance on wire

Fg = Fm

m*g = i*L*B

B = m*g/(i*L)

Using given values:

B = 2*10^-3 kg*(9.81 m/sec^2)/(1.6 A*12*10^-2 m)

B = 0.10 T

Part B

Since gravitational force is downward, so to balance the wire magnetic Force will be upward. Now from Flemming's left hand rule Magnetic field will be out of the screen,

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