iPad 3:21 AM session.masteringphysics.com Copy Problem 20.04 MasteringPhysics 2

Question

iPad 3:21 AM session.masteringphysics.com Copy Problem 20.04 MasteringPhysics 2 of 5 Problem 20.04 A particle having a mass of 0.200g carries a charge of-2.40x108C. The particle is given an initial horizontal northward velocity of 4.00x101m/s Part A What are the direction of the minimum magnetic field that will balance the earth's gravitational pull on the particle? Eastward. Submit Give Up Correct Part B that will balance the earth's What are the magnitude of the minimum magnetic field gravitational pull on the particle? A2 1 2 3 45 6 7 8 9 0

Explanation / Answer

The magnetic field that will balance the earth's gravitational full is

F = Bqv sin 90

mg = Bqv sin 90

B = mg/ qv sin 90

= 0.2 * 10 ^-3 kg ( 9.8 m/s^2)/ - 2.4 * 10 ^-8 C ( 4 * 10 ^4 m/s)

= - 2.04 T

The magnitude of magnetic force is 2.04 T

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