Rubbing a balloon on your hair results in the balloon having a -1.93c charge. if you move the balloon 25 cm away from your hair, what is the electric field acting between the balloon and your hair? o 6.17 x 10 n/c o 2.78 x 10 n/c o 4.01 x 10s n/c o 4.67 x 10 n/c

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good

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.