Which of the following is most responsible for the magnetic behavior of materials?
a) neutronsb) protonsc) photonsd) electronse) phonons

D) electrons

Explanation:

Moving charges creates magnetic field. So the moving electrons of an atom generate microscopic magnetic field. In an atom the magnetism is destroyed when it has equal no. of electrons spinning in the opposite direction.

In the atoms of iron, cobalt and nickle there are more no. of electrons spinning in the same direction.

(75°f − 32) × 5/9 = 23.889°c

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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