Can you hear your radio if you are traveling at the speed of sound?

how fast is the radio going?

(I presume you meant the speed of sound in air). Probably not, because the air rushing past your ears would make it impossible for you to hear anything at all, unless you linked the radio to your ear by a closed pipe (you'd hear it then) except you'd already be dead because you couldn't breathe, except that you'd already be dead because you would have been torn to pieces, except that you'd already be dead because you have been cooked by friction with the air.

yes contrex, quite right, in addition it's a little known fact that passengers flying on the concorde could neither talk to each other nor listen to radios/t.v.s and that is the primary reason the concorde was phased out, audio boredom killed the concorde. now we get to the real question; can you turn off the light and get in bed before it gets dark?

I use a stick...

According to Answers.com WikiAnswers:

The answer is Yes. The engine noise would be transfered to the cabin and the air in the cabin has a velocity of almost 0 compared with the engine. If the engine was completely insulated from the cabin you would not hear it till you slowed down.

You said "radio", not "engine" before. And you think some dweeb on Answers.com is some kind of authority. (I'm not a long term Able2know person. Is this guy a loony?)

I have no idea if the question or the answer is correct because I'm not a scientist. I just thought it was an interesting question. Sorry if it is confusing. I will try to find a better question next time.

BBB

I liked your brain scratching/provoking science question. Clearly radio communication still happens between military jets gone past the speed of sound and their command bases.

I think that radio waves travel not by the speed of sound but at the speed of light:

Professor Martin V. Goldman, University of Colorado, Boulder
http://www.colorado.edu/physics/2000/waves_particles/lightspeed-1.html

When I flew on Concorde I had to sit in the back set to be able to hear my wife talking, who was up front. The sound was shooting out of her mouth so fast that I calculated that I had to be at least 77.8 feet downrange to hear her.
Its a fact that they used sign language on Concorde and all the attendants were trained in lip reading.

Dont ever doubt the dys.

The answer is... it depends.

If you are in a closed cabin, then yes, because you are at rest in relation to the air in the cabin. Sound within the cabin will propagate normally.

You would not be able to hear any sounds that are generated outside the cabin and behind you. The sound waves would not travel fast enough to catch up.

I bet if someone walked in between two people trying to have a conversation on the Concorde the words could in fact cut like a flying shards of glass!

If you flew past a stationary radio at the speed of sound, as you approached the Doppler effect would allow you to hear but your speed would dramatically affect the pitch. After you passed, if you are moving at the speed of sound (through air), you would be moving in parallel with the acoustic wave itself. This would mean simply that you would be in phase with it and your ear would detect no signal (a variation in pressure).

If the radio was on your person and you were in a capsule (to remove outer air disturbance) moving at the speed of sound, you'd be able to hear the radio just fine.

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Thats also true. But your programs would be delayed by 77.8 feet

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I remember Steven WRight when he posed the scientific question of the ages
"If yer driiving along at the speed of light and you turn on your headlights, does anything happen?"

Answer from the same question source:

So far, we have not been able to figure out a way to get objects with mass to travel at the speed of light. The energy required to do so would be infinitely large, and since there's no such thing as an infinite supply of energy, it's impossible.

That being said, if you were to travel at very close to the speed of light, you would see the light from your headlights as you would normally see light from your headlights. Light travels at the same speed regardless of your frame of reference (in other words, regardless of how fast you're moving compared to other objects). The road, trees, street signs, etc, on the other hand, would all be strangely warped.

However if by some magical technology you were actually able to go the speed of light I doubt you would be able to see your headlights at all. They would never be able to go fast enough to get in front of your car.