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Constants Part A A V 140-V battery is connected across two parallel metal plates of area 28.5 cm and separation 8.50 mm. A beam of alpha particles (charge +2e, mass 6.64 x 10-27 kg) is accelerated from rest through a potential difference of 1.70 kV and enters the region between the plates perpendicular to the electric field as shown in the figure.(Figure 1) What magnitude of magnetic field is needed so that the alpha particles emerge undeflected from between the plates? You may want to review (Pages 894-896) For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of An e,m demonstration experiment. Submit Request Answer Figure 1 of 1 Provide Feedback Next >

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Force due toelectvic field s Foyle dueto magnet Audis oFnet o Nelotity 6.64x10-3구.2 2

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