Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. even an empty can contains residual gaseous propellant. for example, the residual pressure in a can is 1.51when it is sitting on a shelf at 23 . if the can is placed on top of the furnace where the temperature reaches the boiling point of water, what is the pressure inside the can?

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?