Question

4.1.4 quiz: magnetism
question 6 of 10
what do the magnets in a computer hard drive and in the strip on a credit card have in common?
a. they hold things together.
b. they separate different materials.
c. they determine direction.
d. they store information.

Explanation:

• Computer hard drives use magnetic storage to store digital information.
• Credit card strips (magnetic stripes) also store information (such as cardholder data).
• Option A: Magnets in hard drives and credit - card strips do not primarily hold things together.
• Option B: They are not for separating materials.
• Option C: They do not determine direction like a compass.

Answer:

D. They store information.