AB 2
po, O
C
D
O,
» direction of movement
5m
Om
of the dogrom shows the positions do ball
ball as it
rolled down o troch. The boll toolh 0.5o to roll from
one position to the next, for example
it rolled from
A to B in 0.5
and from o to e in 0.50
and so on
on Write down
i, the distance travelled by the ball from A to E
5​

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.)