A spring gun, held horizontally 1.09 m above the ground, fires a 0.017 kg marble so that it lands a horizontal distance of 4.38 m away. If the gun is pointed straight up, and the same marble is fired, how high (in meters) will it rise

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.

How is zig zagging a form of acceleration?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87