Car a has a mass of 1.200 kg and is traveling at a rate of 22 km/hr. car b has a mass of 1200 kg and is traveling in the
same direction at 25 km/hr. which of the following statements is true?
both cars have the same momentum
car a has a greater momentum than car b.
car b has a greater momentum than car a

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?