Could a vector ever be shorter than one of its components? equal in length to one of its components? explain.

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

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.

Will give give i chose a roller coaster