High-pressure areas or belts are caused by air which is:

rising and heated
sinking and heated
rising and cooled
sinking and cooled

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

The diagram below shows the different phase transitions that occur in matter. which arrow represents the transition in which dew is formed?

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?