What unit is represented by the smallest intervals printed on a centimeter ruler?

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

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.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?