Consider two thin disks, of negligible thickness, of radius r oriented perpendicular to the x axis such that the x axis runs through the center of each disk. (figure 1)the disk centered at x-o has positive charge density η, and the disk centered at x: a has negative charge density-n, where the charge density is charge per unit area q; what is the magnitude e of the electric field at the point on the x axis with x coordinate a/2?

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

increase masses, decrease separation

wavelength divides in half and speed stays the same.

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."