Three sets of waves came in contact with the object as shown in the picture below. Identify what happens to each set of waves? HELP PLS :(

Determine the maximum r-value of the polar equation r =3+3 cos 0

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.

Observations show that interstellar clouds can have almost any shape and