Answer if you are 100 sure QUESTION 57 Which of the followin

Answer if you are 100% sure

QUESTION 57 Which of the following pairs of materials displays ferromagnetic behavior? o A. Aluminum and titanium B.Mno and Fe304 C.Iron (ferrite) and nickel o D. Aluminum oxide and copper QUESTION 58 Why would repeatedly dropping a permanent magnet on the floor causes it to become demagnetized? o A. You will break the magnet into two pieces, which reduces the overall magnetism. o B.When you drop the magnet it passes through the earth\'s electromagnetic field, which induces magnetism. Because the magnet is spinning randomly while it falls, the magnetic domains become aligned randomly as we o C. You are effectively cold working the sample, and the dislocation movement interferes with the magnetic alignment. D. Dropping it on the floor causes a bunch of magnetic dipoles to become misaligned by dipole rotation.

Solution

1-c

2-d

3-b

4-a