give me an example of P waves

Sure! Here is an example of P waves in a seismogram:

P waves are the first waves recorded on a seismogram during an earthquake. They are also known as primary waves and are the fastest seismic waves. P waves are longitudinal waves, which means that they cause particles of the Earth's surface to move in a back-and-forth motion parallel to the direction of wave propagation.

In the seismogram, the P waves appear as small, smooth curves that are closely spaced together. They usually have a low amplitude and a higher frequency compared to other waves. P waves are responsible for the initial jolt felt during an earthquake and are capable of traveling through both solids and liquids.