A vector starts at the point (0.0) and ends at (3,-3). What is the angle of the displacement? 4.24
18
45 degrees
90 degrees

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

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

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.