There are two tuning forks struck at the same time. one tuning fork is tuned to a frequency note of 500 hz. the other is tuned to a frequency of 487 hz. how many beats will occur in 2 seconds?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

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.