A student walks 10 meters East then 20 meters west. What is the student's resultant displacement? Group of answer choices

30 meters East

10 meters West

30 meters West

10 meters East

Which model displays the change in a gas when the temperature of the gaseous system decreases?

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.)

What is the relationship between ozone and smog?