I think it's time we say goodbye toisn't preparing us for anything. They're using us for money by making us see ads and pay for premium. Instead of actually learning, we use as a crutch. When some of us go back to in real school, we will know nothing. I want to do better, I want you to do better, because we all deserve better, who's with me?
Copy & paste to share the message, because you deserve better :)

Certain bacteria (such as aquaspirillum magnetotacticum) tend to swim toward the earth’s geographic north pole because they contain tiny particles, called magnetosomes, that are sensitive to a magnetic field. if a transmission line carrying 100 a is laid underwater, at what range of distances would the magnetic field from this line be great enough to interfere with the migration of these bacteria? (assume that a field less than 5% of the earth’s field would have little effect on the bacteria. take the earth’s field to be 5.0 * 10-5 t, and ignore the effects of the seawater.)