Sometimes she feels like waving, and sometimes she doesn't. We have considerably less idea of what is going on in her head than you do.
Question is: Is he interested in you?
Wave Back!
inferd is its own wave it doesnt emit a wave
That probably means she is trying to make your girlfriend jealous...Maybe. It depends on what kind of person she is.
Sometimes it makes an echo or reverberation.
different mediums
Wave on a rope doesn't belong as it is not a natural occurrence like the other three options.
When a sound wave hits an object, it causes the object to vibrate at the same frequency as the sound wave. This can sometimes be seen as the object physically moving, especially if the sound wave has a high intensity or frequency.
No, individual particles of a medium do not move along with a wave. Instead, they oscillate back and forth in a motion perpendicular to the direction of wave propagation. This motion of particles helps to transfer the energy of the wave through the medium.
It doesnt.
In wave motion, the medium does not physically travel with the wave because the medium particles only oscillate back and forth about their equilibrium positions. The energy of the wave is transferred through the medium by causing these particles to vibrate without displacing the medium itself.
non matter,it doue not have mass and doesnt occcupt a space