Two movers use a ramp to load a piano into a truck • Describe how the potential energy and kinetic energy of the piano change as it sits on the ground, as it is moved into the truck, and as it sits in the truck
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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.

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

What can you increase the strength of an electromagnet by