How much thermal energy must be added to a 250-g aluminum pan to raise its temperature from 20°C to 85°C? The specific heat of aluminum is 897 J/(kg •K)

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.

Distinguish between linear momentum and angular momentum

Aball horizontally thrown from a cliff at 8m/s