I WONDER - What Are Radio Waves?

The video tutorial explains that radio waves are a form of radiation, which is energy in motion. It introduces the concept of frequency, defined as the number of waves passing a point per second. The tutorial also describes how transmitters convert audio and visual content into electric signals, which are then combined with radio waves of specific frequencies for transmission.

What does a transmitter do with electric signals?

What is combined with electric signals to create radio waves?