N) A rectangular piece of aluminum foil is 12.8 cm long and 4.20 cm wide. It has a mass of 0.319 g.
What is the thickness of the aluminum foil if the
density of aluminum is 2.70 g/cm'?

When balancing a chemical equation:

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?

All motion is caused by force? true or false