(A) Is an X-ray image of the right hand of a 7-year-old girl with changes of the thumb: cone-shaped epiphysis is embedding the metaphysis of the thumb singly. (B) Is a radiological image of the right hand of an 8-year-old girl with variation in the little finger: cone-shaped ep...
- To find the direction of the magnetic field→B, we can use the right-hand rule. For a positive charge, the thumb points in the direction of the velocity→v(positive x-direction), and the fingers point in the direction of the magnetic field→B. The palm then points in the direction...