Find a smooth, hard surface in your house or outside (no carpet). Make a mark on the ground. Get a ball or marble, and predict how far it will roll if you gently push it from your mark. Gently push the ball or marble, making sure that it does not hit a wall or a piece of furniture. Measure the distance it rolls, beginning at the starting mark you made. How close was your prediction? Why did the ball stop? What happened to the kinetic energy in the rolling ball? Give as much detail as you can.

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0