Explore how a kaleidoscope works. find two mirrors, and hold them upright on the desk, so they are at an angle to each other like an open book. set an object between them, and look in the mirrors. how many images do you see? slowly bring the mirrors together. what happens? are the images you see the same? can you explain what you see?

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion. what is the frequency f of oscillation?