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.
A
You might also like to view...
A ball is rolling around a curved horizontal track. Which of the paths represents the path of the ball when it leaves the track?
Calculate the kinetic energy (in eV) of a nonrelativistic neutron that has a de Broglie wavelength of 9.9 × 10-12 m. (h = 6.626 × 10-34 J ? s, mneutron = 1.675 × 10-27 kg, 1 eV = 1.60 10-19 J)
What will be an ideal response?
If a binary system has a period of 4 years and a separation of 5 AU, then the total mass is 7.8 solar masses
Indicate whether the statement is true or false
An object is dropped from a bridge. A second object is thrown downwards 1.0 s later. They both reach the water 20 m below at the same instant. What was the initial speed of the second object? Neglect air resistance
A) 21 m/s B) 9.9 m/s C) 20 m/s D) 15 m/s E) 4.9 m/s