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A Proton,with Mass 1 $2.3 \times 10^4 \mathrm {~m} / \mathrm { s }$

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A proton,with mass 1.67 × 10^-27 kg and charge +1.6 × 10^-19 C,is sent with velocity $2.3 \times 10^4 \mathrm {~m} / \mathrm { s }$ in the +x direction into a region where there is a uniform $\vec { E }$ field of magnitude $780 \mathrm {~V} / \mathrm { m }$ in the +y direction.What must be the magnitude and direction of the uniform $\vec { B }$ field in the region if the proton is to pass through undeflected? Assume that the magnetic field has no x component and neglect gravitational effects.

A Proton,with Mass 1 2.3×104 m/s2.3 \times 10^4 \mathrm {~m} / \mathrm { s }2.3×104 m/s

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A Proton,with Mass 1 $2.3 \times 10^4 \mathrm {~m} / \mathrm { s }$

Correct Answer:
Verified
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