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Quiz3S - Physics 125 Analytical Physics II Quiz 4H4fﬂ8...

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Unformatted text preview: Physics 125: Analytical Physics II Quiz 4H4fﬂ8 The ﬁgures Show different charged objects that are moving through unit‘nnri magnetic fields. For each one, indicate a direction for an external eieclrie ﬁeld that wouid result in no net force on the moving object. If there is ahead}! zero net force on the object, write ‘None.” B _.4.— @v; Q>ﬂ #= #2 E direction needed: i E direction ceded: 3 -— --..._. @ E diremiori needed: NU ﬂ {3 Forthisiaetfigure:Q=—2n£‘., Bzipi', 1::3rnfs, 8’3 ® and is 3D” below i'IOﬁKOI'Itﬂi. Wimt magnitude of E15; {3 required? {3, ﬁﬁﬂ E if igdmﬂi Perfgnollfﬂlm“ So o Far 31:1”- Farce we Hera? __ f E direction needed: __ ﬁ- \/ '2— ? E: V, B: (3 é)( 5‘! 0 T) " [E = 15 x t 0' 2,] ...
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