2007-10-20 05:01:56 · 8 answers · asked by Mojo Ryzin 5 in Science & Mathematics ➔ Physics
If by blast you mean the shock wave overpressure, they would get to you at the same time. Both sound and the shock wave are longitudinal pressure waves of air. So they both travel at the local speed of sound (about 880 fps).
But, if by blast you mean the radiant heat and light, that would reach you way earlier than the sound/shock wave. Radiant heat and visible light are the same thing, but at different frequencies. They are photons and they travel at the speed of light (about 186,000 miles per second).
Next time you see a video of an atomic explosion, pay attention to the order of the light and shock wave effects. First thing, you see the blast of light. Then, seconds later, depending on how far away the video camera was from the explosion, you see, feel, and hear the shock wave.
2007-10-20 05:14:27 · answer #1 · answered by oldprof 7 · 2⤊ 0⤋
You would feel it and hear it at the same time. Sound is a compression wave, which is the same as the blast you feel.
You would SEE it before you felt it, though.
2007-10-20 12:06:06 · answer #2 · answered by dooner75 3 · 2⤊ 0⤋
The sound wave and the blast are one in the same. The sound is merely the shockwave from the blast regestering in your ears. Because it is vibrating air, which is all sound waves are, your ear drum will resonate with it and send the signal to the brain, which interperates it as sound.
2007-10-20 12:06:30 · answer #3 · answered by Turkmenbashi 3 · 4⤊ 0⤋
How near?
Blast and Sound travels at different speed and depending on your distance from the explosion, it could be either one.
"Near" could be a couple blocks from where I'm standing where I can still feel the sound wave but not the blast.
2007-10-20 12:14:21 · answer #4 · answered by Anonymous · 0⤊ 4⤋
Blast
2007-10-20 12:10:01 · answer #5 · answered by Wounded Duck 7 · 0⤊ 4⤋
Sound wave
2007-10-20 12:05:47 · answer #6 · answered by Mary Anne C 2 · 1⤊ 3⤋
the sound wave
2007-10-20 12:05:45 · answer #7 · answered by Kim H 2 · 1⤊ 3⤋
Does it matter?
2007-10-20 12:04:56 · answer #8 · answered by Krypto 2 · 1⤊ 4⤋