Mass of Liquid A Initial Temperature Mass of Liquid B Initial temperature Final Temperature 50 grams 20°C 50 grams 100°C 75°C Two liquids from separate beakers are at the temperatures indicated in the table. What would be the best estimate for a mixture if you used 100 grams of liquid A? A) 20°C B) 25°C C) 55°C D) 75°C

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.)