MasteringPhysics: ASSIGNMENT 15, More on direct current circuits, magnetic field

Question

MasteringPhysics: ASSIGNMENT 15, More on direct current circuits, magnetic fields-Internet Explorer https://session.masteringphysics.com/myct/itemView?assignmentProblemID=86738298 NME Exercise 27.1 Resources « previous| 10 of 12 next » Exercise 27.1 Part A A particle with a charge of-1.24 × 10-8 C is moving with instantaneous velocity u= (4.19 × 104 m/s)(-3.85 × 104 m/s)j What is the force exerted on this particle by a magnetic field B = (1.90 T ) i? Enter the x, y, and z components of the force separated by commas. Submit My Answers Give Up Incorrect, Try Again, 5 attempts remaining Part B What is the force exerted on this particle by a magnetic field B = (1.90 T ) k? Enter the x, y, and z components of the force separated by commas ? Submit My Answers Give Up Continue

Explanation / Answer

q = - 1.24 x 10^-8 C

v = (4.19 x 10^4) i + (-3.85 x 10^4) j

b = 1.90 i

(A) F = q (v x B) { cross product of v and B }

F = - (9.08 x 10^-4 ) k N

Ans: 0 , 0, -9.08 x 10^-4

(B) B = 1.90 k

F = (9.87 x 10^-4)j + (9.08 x 10^-4)i

AAns: 9.08 x 10^-4, 9.87 x 10^-4 , 0

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