A girl weighing 80 kg is standing on a flat surface, the area of each foot is 175 cm ^2. find out the total force and pressure exerted by her on the ground. given g = 10 m/s^2 *

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

Select the three ways that the parallel-plate capacitor differs from a car battery.