Which of the following is the most dense? 1) water 2) solid 3) gas 4) all of the above

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?