Power = work/time
= 500/10
= 50J/s or 50 watt
The forces of gravity between two objects are smaller when the objects are farther apart.
Well, since you only want direction, ignore the numbers. Use the right hand rule.
Current (pointer finger) points west (left).
Magnetic field (middle finger) points south (towards you).
Force (thumb) then points up (away from the earth)
