Also if you had a car that travels faster than the speed of sound is there any need for a horn?
2006-10-21 01:30:56 · 17 answers · asked by minisandmoto 2 in Science & Mathematics ➔ Other - Science
Its probably a woman.
2006-10-21 01:34:29 · answer #1 · answered by Anonymous · 2⤊ 3⤋
Sound waves propagate at the rate of about 1,100 feet per second in a mass of air even within a mass of air traveling at the speed of a Concorde. A car that can travel faster than the speed of sound will need a horn at lower speeds. At supersonic speeds, flashing lights would still work.
2006-10-21 02:42:42 · answer #2 · answered by Kes 7 · 0⤊ 0⤋
The vessel itself is sealed off from the atmosphere. You are inside of a vessel that is traveling twice the speed of sound. But inside the cabin you are immobile. You are cargo to that vessel, protected from the surrounding elements and essentially just along for the ride. The person behind you is in the same situation. In short it is not you who is traveling at 2 times the speed of sound but the vehicle you are in.
As for the car thing, probably not. People would hear your horn from the wrong place in the road and after you honked it. And unless your car was completely airtight and soundproof you wouldn't survive. The pressure exerted on the vehicle would flow through and crush you and the localized sonic boom would cause you to implode as soon as you broke the sound barrier.
2006-10-21 05:27:02 · answer #3 · answered by Rick R 5 · 0⤊ 0⤋
Because the air in the cabin is moving along with both of you. You are traveling at twice the speed of sound with respect to the air OUTSIDE the plane.
If you were traveling at Mach 2 OUTSIDE an airplane, you would not be able to hear the person behind you. But, in that case, you would have other things on your mind than what they were saying!!!
2006-10-21 01:56:15 · answer #4 · answered by poorcocoboiboi 6 · 0⤊ 0⤋
Because they are travelling at the same speed as you. And as for the horn on the car, flashing lights would surely be better as light travels faster than sound.
2006-10-21 01:37:03 · answer #5 · answered by Anonymous · 1⤊ 0⤋
because the person behind you is also travelling at the speed of sound.
as for the car, no there is no point in having a horn as by the time anyone heard it you would already be gone
2006-10-21 04:49:40 · answer #6 · answered by becky 2 · 0⤊ 0⤋
The person behind you is traveling at the same rate of speed that you are. His/her conversation is ttaveling along with them as well. If you would hear them at a conventional speed, you will hear them, at twice the speed of sound. Yes especially if you're backing up.
2006-10-21 01:41:36 · answer #7 · answered by Beau R 7 · 0⤊ 0⤋
You both have the same horizontal velocity (in this case 680.58 m/s) so when the person behind you speaks his sound also has that same horizontal velocity plus the velocity of the sound waves.
So to people in the plane the person behind you's voice is travelling at the speed of sound, and appears normal, however any people outside the plane it's travelling at the speed of sound plus the speed of the plane (340.29 x 3 = 1,020.87 m/s).
2006-10-21 01:44:45 · answer #8 · answered by Chimbles 2 · 0⤊ 1⤋
ur question is spot on....
since concorde is moving with velocity greater than that of sound
the environment inside concorde is also moving with the same velocity.
so we can say the system as a whole moves with that velocity.
so there's no relative velocity between u ur friends in the same plane.
if the speed of concorde be V and actual velocity of sound be v
so speed of sound inside plane will be V+v and ur velocity or ur friends velocity is also is V
so relative velocity between sound and ur friend is V+v-V=v
actual speed of sound itself
so sound travels in the same way.
so don't worry ,u talk freely to ur friend ,he'll hear u ,certainly
if he doesn't then he is playing tricks on u
the same question has made many people scratch their heads
when they read one of dan brown's novels when 2 people were talking in a supesonic jet
2006-10-21 05:27:45 · answer #9 · answered by K R 2 · 0⤊ 0⤋
Because you are both traveling at the same speed
2006-10-21 22:28:04 · answer #10 · answered by Mike F 1 · 0⤊ 0⤋
since u & u'r neighbour r also at mach speed ..... the relative speed bettween the 2 of u is 0
hence it is same situation as standstill for ppl travling the the concorde
thats y u can hear the person behind
2006-10-21 01:39:40 · answer #11 · answered by Anonymous · 1⤊ 0⤋