An eighteen wheeler weighing 40 tons is traveling down the highway with a speed of 80.0 mi/hr. The driver sees an accident 0.10 miles ahead and slams on the brakes. What is the minimum friction force that the tires can supply,

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 is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Hurry! how much heat is absorbed by a 72g iron skillet when its temperature rises from 11°c to 23°c?