What magnetic field strength is required to balance weight

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Q. Freud believed that certain troubling symptoms could be traced to painful unconscious memories. This led him to suspect that these symptoms resulted from

A. genetic defects.
B. an inferiority complex.
C. psychological processes.
D. an internal locus of control

Q. A proton moves with a speed of 2.0 106 m/s horizontally, at a right angle to a magnetic field. What magnetic field strength is required to just balance the weight of the proton and keep it moving horizontally?

Reference no: EM1356346

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