At the temperature of 20°C the speed of sound is 343 m/s.
No, X-rays do not travel at the speed of sound. X-rays are a form of electromagnetic radiation that travel at the speed of light, which is much faster than the speed of sound.
We can use ultrasonic planes. They can travel with that speed.
There is currently no commercial airliner which can travel at that speed.
No, the speed of sound is not dependent on frequency. It is determined by the medium through which the sound waves travel.
The sound barrier
No. Light travels at about 875 thousand times the speed of sound.
They don't really travel at the same speed, but, on television, the distance they travel is so short, that the difference between the speed of sound and the speed of light is almost non-existant.
No. The fastest speed a tornado has peen known to travel is 73 mph, about 1/10 the speed of sound. The fastest wind speed ever recorded in a tornado was 302 mph, still less than half the speed of sound.
It was the same speed. It generally travel with 340ms-1 speed.
Speed has nothing to do with where you are. You can travel below the speed of sound pretty much anywhere.
Ultrasonic sound waves travel at the same speed as lower frequency sound waves. The medium determines the speed at which a sound wave, which is mechanical energy, can travel. Sound waves travel faster in liquids than in a gas (like air), and travel faster still in solids. The speed at which a sound wave travels is generally independent of the frequency of that sound. Use the link below for more information.
The speed of sound, it is different in different substances, but it is roughly equal to the speed of sound in rock.