In the figure, a charged particle moves into a region of uniform magnetic field B, goes through half a circle, and then exits that region. The particle is either a proton or an electron (you must decide which). It spends 139 ns in the region. (a) What is the magnitude of B? (b) If the particle is sent back through the magnetic field (along the same initial path) but with 2.68 times its previous kinetic energy, how much time does it spend in the field during this trip? OB (a) Number 1 Units (b) Number •2 Units

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Chapter1: Units, Trigonometry. And Vectors
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*Chapter 28, Problem 026
In the figure, a charged particle moves into a region of uniform magnetic field B, goes through half a círcle,
and then exits that region. The particle is either a proton or an electron (you must decide which). It spends
139 ns in the region. (a) What is the magnitude of B ? (b) If the particle is sent back through the magnetic
field (along the same initial path) but with 2.68 times its previous kinetic energy, how much time does it
spend in the field during this trip?
OB
(a) Number
1 Units
(b) Number
2 Units
Transcribed Image Text:*Chapter 28, Problem 026 In the figure, a charged particle moves into a region of uniform magnetic field B, goes through half a círcle, and then exits that region. The particle is either a proton or an electron (you must decide which). It spends 139 ns in the region. (a) What is the magnitude of B ? (b) If the particle is sent back through the magnetic field (along the same initial path) but with 2.68 times its previous kinetic energy, how much time does it spend in the field during this trip? OB (a) Number 1 Units (b) Number 2 Units
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