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hjlf
3 years ago
13

The strength of a bar magnet's magnetic field decreases with distance according to what is known as an inverse cube law; multipl

ying the distance from the magnet by a factor of k divides the magnetic field strength by a factor of k^3. Suppose the magnetic field strength of the magnet is 64 Gauss at a distance of 10 cm away. What is the magnetic field strength of the magnet, 20 cm away?
Mathematics
1 answer:
sweet [91]3 years ago
8 0

Answer:

8 Gauss

Step-by-step explanation:

Since your moving the magnet from 10 to 20cm you're essentially multpliying the distance by 2.

K = 2

Therefore k ^ 3 = 2^3

64/2^3

=8

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