The magnetic pole near the Earth's north geographic pole actually has to be  Group of answer choices an S pole, because it attracts the N pole of your compass needle. either an N or an S pole, but scientists have not determined which one yet。 an N pole because it repels the S pole of your compass needle.

Two long, parallel wires are separated by 2.0 m. Each wire has a 32-A current, but the currents are in opposite directions.

The magnetic field of the Earth is similar in shape to that of a bar magnet, as shown in the figure. If a proton from space enters the Earth's magnetic field to the left of the Earth, with a velocity of 8x107 m/s directed into the page, and the Earth has a magnetic field strength of 1x10-5 T at this location; a) What is the magnitude of the force acting on the proton? b) What is the direction of the force acting on the proton? c) What is the radius of the resulting circular trajectory that the proton will follow?

8. A charged particle moves in a horizontal plane with a speed of 8 70 106 . × m / s. When this particleencounters a uniform magnetic field in the vertical direction it begins to move on a circular path of radius15.9 cm. (a) If the magnitude of the magnetic field is 1.21 T, what is the charge-to-mass ratio (q/m) ofthis particle?