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OpenStudy (wach):
Can someone help me with these MC problems?
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OpenStudy (wach):
OpenStudy (gavlois1):
I am a little short on time, so I will only be able to help you with the first one (the one with the picture). We are looking for the magnetic field strength which would balance the electric force. From the equation: \[\left| E \right|=\frac{ Fe }{ q }\] The electric field applies a force of \[q \left| E \right|\] That means our magnetic field would need the same strength in order to balance it out, which means the answer is D.
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