A student wants to start a small business in school. Write down six items that he/she can sell in school at a profit.

How is the gravitational force related to the distance between two objects?

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

Which of these metals are magnetic?