Multiple Choice
Three identical bar magnets,each 2 cm long,are placed in a straight line on a frictionless surface with their ends equally spaced with 2 cm between ends.They are constrained so they cannot rotate,but they can slide along the straight line.The left magnet has its north pole nearest the north pole of the middle magnet,and the right magnet has its south pole toward the middle magnet's south pole.Once they are in place and released from rest,which of the following best describes the motion of the magnets?
A) The end magnets will move away from the center magnet.
B) The magnets will not move since they are equally spaced.
C) The magnets will snap together.
D) None of the above would happen.
Correct Answer:

Verified
Correct Answer:
Verified
Q12: When an electromagnet has an iron core
Q13: A proton with initial kinetic energy KE
Q14: A copper wire of length 25.0 cm
Q15: Two parallel wires are separated by 0.36
Q16: An electron is accelerated from rest through
Q18: A current in a solenoid with N
Q19: Electrical charges and magnetic poles have many
Q20: There is a current I flowing in
Q21: An electron moves through a region of
Q22: A rectangular coil (0.13 m × 0.98